Tuberculosis Testing

Number: 0471

  1. Aetna considers the Mantoux tuberculin skin-test a medically necessary preventive service, according to guidelines from the Advisory Council for the Elimination of Tuberculosis.  The selection criteria are listed below.

    Based on published reports in the medical literature and Centers for Disease Control and Prevention (CDC) surveillance data, the Advisory Council for the Elimination of Tuberculosis recommends that the following groups be screened for tuberculosis and tuberculosis infection:

    1. Any person who is suspected of having active tuberculosis;
    2. Close contacts (i.e., those sharing the same household or other enclosed environments) of persons known or suspected to have tuberculosis;
    3. Foreign-born persons, including children, recently arrived (within 5 years) from countries that have a high tuberculosis incidence or prevalence (e.g., Africa, Asia, Latin America, Middle East, Oceania, and the Caribbean);
    4. Health-care workers who serve high-risk clients;
    5. High-risk racial or ethnic minority populations, as defined locally (refer to State Department of Health);
    6. Individuals planning to receive or receiving tumor necrosis factor alpha inhibitors (e.g. infliximab);
    7. Infants, children, and adolescents exposed to adults in high-risk categories;
    8. Persons who inject illicit drugs or other locally identified high-risk substance users (e.g., crack cocaine users);
    9. Residents and employees of high-risk congregate settings (e.g., correctional institutions, mental institutions, nursing homes, other long-term residential facilities, and shelters for the homeless);
    10. Some medically under-served, low-income populations;
    11. Persons who have any of the following medical risk factors known to increase the risk for disease if infection occurs:

      1. Chronic renal failure
      2. Conditions requiring prolonged high-dose corticosteroid therapy and other immunosuppressive therapy (including bone marrow and organ transplantation)
      3. Diabetes mellitus
      4. Gastrectomy
      5. Human immunodeficiency virus (HIV) infection
      6. Jejuno-ileal bypass
      7. Other specific malignancies (e.g., carcinoma of the head or neck)
      8. Persons who have an abnormal chest radiograph showing fibrotic lesions consistent with old, healed tuberculosis
      9. Silicosis
      10. Some hematological disorders (e.g., leukemias and lymphomas)
      11. Weight 10 % or more below ideal body weight.

    Aetna considers multiple puncture tuberculosis skin tests (e.g., tine test) experimental and investigational because they are less specific than the Mantoux test.

  2. Based on guidelines from the CDC, Aetna considers QuantiFERON-TB Gold test (QFT-G) a medically necessary preventive service in place of (and not in addition to) the Mantoux tuberculin skin-test.  According to the CDC, the QFT-G can be used in all circumstances in which the Mantoux tuberculin skin-test is used, including contact investigations, evaluation of recent immigrants who have had bacillus calmette-guerin (BCG) vaccination, and sequential-testing surveillance programs for M. tuberculosis infection (e.g., health-care workers and others undergoing serial evaluation).

  3. Based on guidelines from the CDC, Aetna considers the QuantiFERON-TB test (QFT) or the the T-SPOT TB test a medically necessary preventive service for latent tuberculosis infection (LTBI) screening in any of the following:

    1. Initial and serial testing of persons with an increased risk for LTBI (e.g., injection-drug users, recent immigrants, and residents and employees* of prisons and jails); or
    2. Initial and serial testing of persons who are, by history, at low-risk for LTBI but whose future activity might place them at increased risk for exposure, and others eligible for LTBI surveillance programs (e.g., health-care workers* and military personnel*); or
    3. Testing of persons for whom LTBI screening is performed but who are not considered to have an increased probability of infection (e.g., entrance requirements for certain schools* and workplaces*).

*Note: Some Aetna plans exclude coverage of services required by third parties, including diagnostic services in connection with obtaining or continuing employment, travel, and school admissions or attendance.  Please check benefit plan descriptions.

Note: Some Aetna plans exclude coverage of preventive services.  Please check benefit plan descriptions.


Tuberculosis (TB) is caused by mycobacteria (Mycobacterium tuberculosis complex, which includes M. tuberculosis, M. Bovis, and M. Africanum) transmitted from an infectious source to susceptible persons primarily through the air (e.g., through coughing).  Most individuals who are infected are usually asymptomatic and non-infectious; the only indication of infection may be a reaction to a tuberculin skin test.  Infection and risk for developing clinical TB can persist for years, especially if the immune system becomes impaired.  The estimated number of persons having latent TB infection in the United States ranges from 10 million to 15 million.  The incidence of TB may be even higher among certain groups who are at risk.  Screening and preventive therapy programs are important for persons in these high-risk groups.

Despite efforts by the U.S. Department of Health and Human Services to eliminate TB, several complex social and medical factors caused TB morbidity to increase by 14 % in the U.S. from 1985 through 1993.  This increase has been attributed to several factors, including the human immunodeficiency virus (HIV) epidemic, the occurrence of TB in foreign-born persons from countries that have a high prevalence of TB, and the transmission of M. tuberculosis in congregate settings (e.g., health-care facilities, correctional facilities, drug-treatment centers, and homeless shelters).

Tuberculin skin testing (TST) is the standard method for identifying persons infected with M. tuberculosis.  The Mantoux test (i.e., the intra-cutaneous administration of 5 units of purified protein derivative [PPD] tuberculin) best detects infection.  According to available guidelines, multiple puncture devices (e.g., tine test) should not be used to screen high-risk populations because they are less specific than the Mantoux test.In the multiple-puncture test, the amount of tuberculin that actually enters the skin can not be measured and thus this test technique results in inadequate sensitivity and specificity.

The need for repeat skin testing should be determined by the likelihood of continued exposure to infectious TB.  All tuberculin-negative persons should be re-tested if they are exposed to an infectious person.  In some institutional and group-living environments (e.g., hospitals, prisons, nursing homes, and shelters for the homeless), the risk of exposure is enough to justify repeat testing at regular intervals.  The frequency of repeat testing depends on the degree of risk of exposure, as determined by locally generated data.

In-vitro cytokine-based immunoassays for the detection of M. tuberculosis infection have been the focus of intense research and development and in 2001, QuantiFERON®-TB or QFT (Cellestis Limited, Carnegie, Victoria, Australia) was approved by the U.S. Food and Drug Administration (FDA).  A subsequently developed version, QuantiFERON-TB Gold or QFT-G (Cellestis Limited, Carnegie, Victoria, Australia), received final approval from the FDA on May 2, 2005.  According to the Centers for Disease Control and Prevention (CDC) guidelines, QFT-G is intended to replace QFT and can be used in all circumstances in which the TST is currently used, including contact investigations, evaluation of recent immigrants who have had bacillus calmette Guerin (BCG) vaccination, and TB screening of health-care workers and others undergoing serial evaluation for M. tuberculosis infection.  The CDC guidelines state that QFT-G can be used in place of (and not in addition to) the TST.

Each of the 3 tests (TST, QFT, and QFT-G) relies on a different immune response and differs in its relative measures of sensitivity and specificity.  The TST assesses in-vivo delayed-type hypersensitivity (Type IV), whereas QFT and QFT-G measure in-vitro release of IFN-g.  The TST and QFT measure response to PPD, a polyvalent antigenic mixture, whereas QFT-G measures response to a mixture of synthetic peptides simulating 2 specific antigenic proteins that are present in PPD.  The agreement between TST and QFT in persons at increased risk for latent tuberculosis infection (LTBI) facilitated approval and acceptance of QFT.  Results of similar studies using QFT-G testing for persons at increased risk have not been published, but less agreement between TST and QFT-G is predictable because fewer and more specific antigens are used in QFT-G.  QFT-G is not affected by prior BCG vaccination and is expected to be less influenced by previous infection with non-tuberculous mycobacteria.  TSTs are variably affected by these factors.  QFT-G does not trigger an anamnestic response (i.e., boosting) because it does not expose persons to antigen.  Injection of PPD for the TST can boost subsequent TST responses whereas QFT-G might be less affected by boosting from a previous TST.

In direct comparisons, the sensitivity of QFT-G was statistically similar to that of the TST for detecting infection in persons with untreated culture-confirmed TB.  Morie et al (2004) reported a specificity of 98.1 % in 216 BCG-vaccinated individuals who were at low-risk for M. tuberculosis infection, and a sensitivity of 89.0 % in 118 patients with culture-confirmed TB.  However, QFT-G results were derived slightly differently from the methods approved by FDA.  Kang, et al. (2005) compared QFT-G with TST by using 2 tuberculin units of RT-23.  In a group of 99 healthy, BCG-vaccinated individuals, the specificity of QFT-G was 96 %, compared with 49 % for the TST.  Among 54 patients with pulmonary TB disease, the sensitivity of the QFT-G was 81 %, compared with 78 % for the TST.  Ferrara et al (2005) compared QFT-G and the TST in an unselected population of 318 hospitalized patients.  QFT-G had greater sensitivity for TB disease (67 %) than did TST (33 %), but indeterminate QFT-G responses were common (21 %) among patients with negative TST results, the majority of whom were thought to be immunocompromised or immunosuppressed.

QFT-G might represent a cost-effective alternative to the TST in testing programs which are part of the TB infection control program in institutions such as health care settings, correctional facilities, or homeless shelters.  In these settings, false-positive reactions to the TST pose a problem.  This problem is compounded in settings with BCG-vaccinated persons born in countries where TB is prevalent.  The greater specificity of the QFT-G and the requirement for only 1 visit are viewed as potential advantages.

QFT can aid in detecting M. tuberculosis infections among certain populations who are at increased risk for LTBI; however, data are insufficient to demonstrate the accuracy of QFT test for testing contacts, and the CDC does not recommended QFT for this situation.  Fietta et al (2003) compared the QFT assay with the TST in patients with newly diagnosed culture-proven TB and healthy volunteers with high- or low-risk of latent M. tuberculosis infection and to identify factors associated with discordance between tests.  A total fo 258 subjects underwent both assays.  All participants completed a detailed questionnaire, and data from TB patients' medical records were collected.  In the entire study population, agreement between tests was moderate and the correlation between the magnitude of QFT response and the TST induration diameter was significant.  In volunteers with no known risk of exposure to M. tuberculosis, the specificity of the assays was comparable.  However, in subjects with active TB or those vaccinated with BCG, the QFT assay detected more reactors than did the TST.  In these individuals, agreement between assays was poor and no correlation or only a weak correlation was found between the diameter of TST induration and the magnitude of the interferon-gamma responses.  The authors concluded that the sensitivity of the QFT assay is greater than that of the TST in patients with active TB before the initiation of anti-TB chemotherapy, but its specificity is influenced more by BCG vaccination.  The QFT assay may provide an improvement over the current practice of the use of the TST to support diagnosis of active M. tuberculosis infection in the clinic; however, QFT can not be considered an adequate replacement for the TST in the screening for latent infection.

The Centers for Disease Control and Prevention (CDC) provided the following guidelines for using the QFT test for LTBI screening:

  1. Initial and serial testing of persons with an increased risk for LTBI (e.g., recent immigrants, injection-drug users, and residents and employees of prisons and jails); or
  2. Initial and serial testing of persons who are, by history, at low-risk for LTBI but whose future activity might place them at increased risk for exposure, and others eligible for LTBI surveillance programs (e.g., health-care workers and military personnel); or
  3. Testing of persons for whom LTBI screening is performed but who are not considered to have an increased probability of infection (e.g., entrance requirements for certain schools and workplaces).

The CDC has stated that the utility of QFT in predicting the progression to active tuberculosis has not been evaluated.

Confirmation of QFT results with tuberculin skin testing (TST) is possible because performance of QFT does not affect subsequent QFT or TST results.  The probability of LTBI is greatest when both the QFT and TST are positive.  Considerations for confirmation are as follows:

  • When the probability of LTBI is low, confirmation of a positive QFT result with TST is recommended before initiation of LTBI treatment.  LTBI therapy is not recommended for persons at low-risk who are QFT-negative or who are QFT-positive but TST-negative.
  • TST can also be used to confirm a positive QFT for persons at increased risk for LTBI.  However, the need for LTBI treatment when QFT is positive and the subsequent TST is negative should be based on clinical judgment and perceived risk.

Negative QFT results do not require confirmation, but results can be confirmed with either a repeat QFT or TST if the accuracy of the initial test is in question.

Because of insufficient data on which to base recommendations, the CDC has concluded that QFT is not recommended for the following indications:

  • Assessment of contacts of persons with infectious tuberculosis.  The CDC explained that rates of conversion of QFT and TST after a known exposure to M. tuberculosis have not been compared, and concordance of QFT and TST after exposure and with serial LTBI screening have not been studied.
  • Confirmation of TST results.  The CDC explains that injection of PPD for TST might affect subsequent QFT results.  Although QFT is not recommended for confirmation of TST results, QFT can be used for surveillance less than 12 months after a negative TST, if the initial QFT is negative.
  • Detection of LTBI after suspected exposure (i.e., contact investigation after a resident or employee is diagnosed with active TB or a laboratory spill of M. tuberculosis) of persons participating in longitudinal LTBI surveillance programs.  The approach of using QFT for initial screening, followed by QFT and TST 3 months after the end of the suspected exposure, has not been evaluated.
  • Diagnosis of M. avium complex disease
  • Evaluation of persons with suspected tuberculosis.  Active TB is associated with suppressed interferon responses, and in prior studies, fewer persons with active TB had positive QFT results than TST results.  The degree of suppression appears to be related to the severity of disease and the duration of therapy.  The CDC notes that studies are under way to compare the sensitivity of QFT and TST among persons with untreated active TB.
  • Screening of children aged less than 17 years, pregnant women, or for persons with clinical conditions that increase the risk for progression of LTBI to active TB (e.g., HIV infection).  The CDC states that further studies are needed to define the appropriate use of QFT among these persons.

Gupta et al (2008) stated that tumor necrosis factor (TNF)-alpha inhibitors such as infliximab are becoming more widely used for the treatment of patients with Crohn's disease, rheumatoid arthritis, and other inflammatory disorders.  These biological agents increase the risk of serious infections, including TB.  Screening for and treatment of LTBI before infliximab therapy reduces the risk of developing active TB.

Theis and Rhodes (2008) noted that TNF-alpha inhibitors are a major advance in the management of inflammatory bowel disease but increase the risk for TB.  These investigators examined the reasons for the increase in the risk for TB and the strategies to reduce it.  Increased susceptibility to TB, often with extra-pulmonary or disseminated disease, occurs following treatment with all anti-TNF-alpha biologics and amounts to a 4- to 20-fold increased risk with infliximab.  Tuberculosis usually occurs shortly after anti-TNF-alpha initiation suggesting re-activation of latent infection.  Animal studies show that TNF-alpha inhibition impairs inflammatory cell trafficking and granuloma formation.  Currently recommended screening for latent TB typically entail risk assessment, tuberculin skin testing and chest radiograph prior to anti-TNF-alpha treatment, which can reduce TB rates by up to 90 % but newer screening interferon gamma assays may enhance screening efficacy.  Patients positive on screening who are treated with isoniazid and subsequently receive anti-TNF-alpha treatment still have approximately 19 % risk for TB.  The authors concluded that TB following treatment with TNF-alpha inhibitors usually results from re-activation of latent disease.  Screening reduces the risk substantially but does not completely eliminate it.

The National Psoriasis Foundation's consensus statement on screening for LTBI in patients with psoriasis treated with systemic and biologic agents (Doherty et al, 2008) stated that it is important to screen all patients for LTBI before initiating any immunologic therapy.  Delaying immunologic therapy until LTBI prophylaxis is completed is preferable.  However, if the patient is adhering to his prophylactic regimen and is appropriately tolerating the regimen, therapy may be started after 1 to 2 months if the clinical condition requires.

Rangaka et al (2012) examined if interferon-γ release assays (IGRAs) can predict the development of active TB and whether the predictive ability of these tests is better than that of the TST.  Longitudinal studies of the predictive value for active TB of in-house or commercial IGRAs were identified through searches of PubMed, Embase, Biosis, and Web of Science and complementary manual searches up to June 30, 2011.  Eligible studies included adults or children, with or without HIV, who were free of active TB at study baseline.  These investigators summarized incidence rates in forest plots and pooled data with random-effects models when appropriate.  They calculated incidence rate ratios (IRR) for rates of disease progression in IGRA-positive versus IGRA-negative individuals.  A total of 15 studies had a combined sample size of 26,680 participants.  Incidence of tuberculosis during a median follow-up of 4 years (IQR 2 to 6), even in IGRA-positive individuals, was 4 to 48 cases per 1,000 person-years.  Seven studies with no possibility of incorporation bias and reporting baseline stratification on the basis of IGRA results showed a moderate association between positive results and subsequent tuberculosis (pooled unadjusted IRR 2.10, 95 % confidence interval [CI]: 1.42 to 3.08).  Compared with test-negative results, IGRA-positive and TST-positive results were much the same with regard to the risk of tuberculosis (pooled IRR in the 5 studies that used both was 2.11 [95 % CI: 1.29 to 3.46] for IGRA versus 1.60 [0.94 to 2.72] for TST at the 10 mm cut-off).  However, the proportion of IGRA-positive individuals in 7 of 11 studies that assessed both IGRAs and TST was generally lower than TST-positive individuals.  The authors concluded that neither IGRAs nor the TST have high accuracy for the prediction of active TB, although use of IGRAs in some populations might reduce the number of people considered for preventive treatment.  Until more predictive biomarkers are identified, existing tests for LTBI should be chosen on the basis of relative specificity in different populations, logistics, cost, and patients' preferences rather than on predictive ability alone.

Fong et al (2012) stated that clinical data with use of serial IGRA testing in U.S. health-care workers (HCWs) are limited.  These investigators performed a single-center, retrospective chart review from 2007 to 2010 of HCWs who underwent pre-employment QuantiFERON-TB Gold In-Tube testing.  Demographic data, bacille Calmette-Guérin history, prior TST result if done, and baseline and serial IGRA values were obtained.  The number of IGRA converters and reverters and their subsequent management by infectious disease physicians were reviewed.  Quantitative IGRA-negative values were not available.  A total of 7,374 IGRAs were performed on newly hired HCWs.  Of these tests, 486 (6.6 %) were positive at baseline, 305 (4.1 %) were indeterminate, and 6,583 (89.3 %) were negative.  From 2007 to 2010, 52 of 1,857 HCWs (2.8 %) with serial IGRA tests were identified as converters, with a serial IGRA median value of 0.63 IU/ml.  Seventy-one percent of HCWs with IGRA conversion had values less than or equal to 1 IU/ml.  None of the converters had active TB or were part of an outbreak investigation.  The authors concluded that clinical significance of most QuantiFERON-TB Gold In-Tube conversions in serial testing remains a challenging task for clinicians.  The use of a single cut-off point criterion for IGRA may lead to over-diagnosis of new TB infections.  Clinical assessment and evaluation may help to prevent unnecessary therapy in these cases.  The criteria for defining conversions and reversions by establishing new cut-offs needs to be evaluated further, especially in HCWs.

Ringshausen et al (2012) noted that IGRAs are increasingly used in the TB screening of HCWs.  However, comparatively high rates of conversions and reversion as well as growing evidence of substantial within-subject variability of interferon-gamma responses complicate their interpretation in the serial testing of HCWs.  These researchers conducted a systematic review on the repeat use of the 2 commercial IGRAs, the QuantiFERON-TB Gold or In-Tube version (QFT) and the T-SPOT.TB (T-SPOT), in the serial testing and its with-subject variability among HCWs in order to provide guidance on how to interpret serial testing results in the context of the periodic screening of subjects with an increased occupational risk of LTBI in countries with low and intermediate TB incidence rates.  The Medline, Embase, and Cochrane databases were searched without restrictions.  Retrieved articles were complemented by additional hand searched records.  Only studies that used commercial IGRAs among HCWs apart from contact and outbreak investigations and those fulfilling further predefined criteria were included.  Overall, 20 studies, 5 using the T-SPOT and 19 using the QFT assay, were included.  Fifteen studies met eligibility criteria for serial testing and 5 studies for within-subject variability.  Irrespective of TB incidence rates in the study's country of origin, reversion rates were consistently higher than conversion rates (range of 22 to 71 % versus 1 to 14 %).  Subjects with baseline results around the diagnostic threshold were more likely to show inconsistent results on retesting.  The within-subject variability of interferon-gamma responses was considerable across all studies systematically assessing it.  The authors concluded that on the basis of reviewed studies they advocate using a borderline zone from 0.2 to 0.7 IU/ml for the interpretation of repeat QFT results in the routine screening of HCWs with an increased LTBI risk.  Subjects with QFT results within this borderline zone, with suspected fresh infection, and those who are considered for preventive chemotherapy should be re-tested with the QFT within a period of about 4 weeks before preventive chemotherapy is recommended.  However, the available data regarding the use of the T-SPOT in the serial testing of HCWs is remarkably limited and warrants further research.

CPT Codes / HCPCS Codes / ICD-9 Codes
CPT codes covered if selection criteria are met:
86480 Tuberculosis test, cell mediated immunity antigen response measurement; gamma interferon
86481     enumeration of gamma interferon-producing T-cells in cell suspension
86580 Skin test; tuberculosis, intradermal [Mantoux]
Other CPT codes related to the CPB:
71010 - 71035 Radiology examination, chest
87116 Culture, tubercle or other acid-fast bacilli (e.g., TB, AFB, mycobacterial) any source, with isolation and presumptive identification of isolates
90585 Bacillus Calmette-Guerin vaccine (BCG) for tuberculosis, live, for percutaneous use
Other HCPCS codes related to the CPB:
J0135 Injection, adalimumab, 20 mg
J1438 Injection, etanercept, 25 mg (code may be used for Medicare when drug administered under the direct supervision of a physician, not for use when drug is self-administered)
J1745 Injection, infliximab, 10 mg
S9359 Home infusion therapy, antitumor necrosis factor intravenous therapy; (e.g., Infliximab); administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits codes separately), per diem
ICD-9 codes covered if selection criteria are met:
010.00 - 018.96 Tuberculous infection
042 Human immunodeficiency virus [HIV] disease
137.0 - 137.4 Late effects of tuberculosis
140.0 - 150.9 Malignant neoplasm of lip, oral cavity, pharynx and esophagus
160.0 - 162.0 Malignant neoplasm nasal cavities, middle ear, and accessory sinuses, larynx, and trachea
170.0 - 170.1 Malignant neoplasm of bones of skull and face, and mandible
171.0 Malignant neoplasm of connective tissue and other soft tissue of head, face, and neck
172.0 - 172.4 Malignant melanoma of skin of lip, eyelid, including canthus, ear and external auditory canal, other and unspecified parts of face, and scalp and neck
173.0 - 173.4 Other malignant neoplasm of skin of lip, eyelid, including canthus, ear and external auditory canal, other and unspecified parts of face, and scalp and neck
190.0 - 192.1 Malignant neoplasm of eye, brain, cranial nerves, and cerebral meninges
193, 194.1 - 194.5 Malignant neoplasm of thyroid gland, parathyroid gland, pituitary gland and craniopharyngeal duct, pineal gland, and carotid body
195.0 Malignant neoplasm of the head, face, and neck
200.00 - 208.91 Malignant neoplasm of lymphatic and hematopoietic tissue
230.0 - 230.1 Carcinoma in situ of lip, oral cavity, and pharynx, and esophagus
231.0 - 231.1 Carcinoma in situ of larynx and trachea
232.0 - 232.4 Carcinoma in situ of lip, eyelid, including canthus, ear and external auditory canal, skin of other and unspecified parts of face, and scalp and skin of neck
234.0 Carcinoma in situ of eye
250.00 - 250.93 Diabetes mellitus
304.00 - 305.93 Drug dependence and nondependent abuse of drugs
502 Pneumoconiosis due to other silica or silicates [silicosis]
503 Pneumoconiosis due to other inorganic dust
515 Postinflammatory pulmonary fibrosis
555.0 - 555.9 Regional enteritis [Crohn's disease]
585.1 - 585.9 Chronic kidney disease (CKD)
696.1 Psoriasis
714.0 - 714.33 Rheumatoid arthritis
720.0 Ankylosis spondylitis
771.2 Other congenital infections specific to the perinatal period
793.1 Nonspecific abnormal findings on radiological examination of lung field [abnormal chest radiograph showing fibrotic lesions consistent with old, healed tuberculosis]
795.5 Nonspecific reaction to tuberculin skin test without active tuberculosis
V01.1 Contact with or exposure to tuberculosis
V03.2 Need for prophylactic vaccination and inoculation against tuberculosis [BCG]
V42.0 - V42.89 Organ or tissue replaced by transplant
V45.3 Intestinal bypass or anastamosis status [jejuno-ileal bypass]
V45.75 Acquired absence of stomach [status post gastrectomy]
V60.0 Lack of housing [homeless]
V60.2 Inadequate material resources [medically underserved, low-income populations]
V60.6 Person living in residential institution [correctional institutions, nursing homes, mental institutions, other long-term residential facilities, homeless shelters]
V74.1 Special screening examination for pulmonary tuberculosis
V85.0 Body mass index less than 19, adult
Other ICD-9 codes related to the CPB:
V58.69 Long-term (current) use of other medications [methotrexate]
V60.2 Inadequate material resources [medically underserved, low-income populations]
V61.49 Other health problems within the family
V61.8 Other specified family circumstance
V70.5 Health examination of defined subpopulations [occupational health exams] [pre-employment screenings]

The above policy is based on the following references:
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    20. Taggart EW, Hill HR, Ruegner RG, et al. Evaluation of an in vitro assay for gamma interferon production in response to Mycobacterium tuberculosis infections. Clin Diagn Lab Immunol. 2004;11(6):1089-1093.
    21. Lodha R, Kabra SK. Newer diagnostic modalities for tuberculosis. Indian J Pediatr. 2004;71(3):221-227. 
    22. National Institute for Health and Clinical Excellence (NICE). Tuberculosis: Clinical diagnosis and management of tuberculosis, and measures for its prevention and control. Clinical Guideline 33. London, UK: NICE; 2006. Available at: Accessed August 3, 2006.
    23. Richeldi L. An update on the diagnosis of tuberculosis infection. Am J Respir Crit Care Med. 2006;174(7):736-742.
    24. Menzies D, Pai M, Comstock G. Meta-analysis: New tests for the diagnosis of latent tuberculosis infection: Areas of uncertainty and recommendations for research. Ann Intern Med. 2007;146(5):340-354.
    25. Dinnes J, Deeks J, Kunst H, et al. A systematic review of rapid diagnostic tests for the detection of tuberculosis infection. Health Technol Assess. 2007;11(3):1-215.
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