Tuberculosis (A15-A19) ICD-10-CM
The A15–A19 section covers tuberculosis with 61 ICD-10-CM diagnosis codes, of which 51 are billable in fiscal year 2027. The section is organized into the 4 code ranges listed below.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- infections due to Mycobacterium tuberculosis and Mycobacterium bovis
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code, if applicable, for associated cachexia E88.A
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- congenital tuberculosis P37.0
- nonspecific reaction to test for tuberculosis without active tuberculosis R76.1
- pneumoconiosis associated with tuberculosis, any type in A15 J65
- positive PPD R76.11
- positive tuberculin skin test without active tuberculosis R76.11
- sequelae of tuberculosis B90
- silicotuberculosis J65
Code Ranges in This Section 4 ranges · 61 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| A15 | Respiratory tuberculosis (A15) | 8 | 7 |
| A17 | Tuberculosis of nervous system (A17) | 9 | 7 |
| A18 | Tuberculosis of other organs (A18) | 38 | 32 |
| A19 | Miliary tuberculosis (A19) | 6 | 5 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the A15–A19 Code Range
Tuberculosis here affects the respiratory system, the nervous system, or other organs. Miliary tuberculosis is an acute form in which tiny tubercles form in several organs as bacteria spread through the blood.
The categories separate these forms by the parts of the body involved. A15 covers respiratory tuberculosis, with subdivisions for the lungs, lymph nodes inside the chest, airways, and other respiratory sites. A17 covers nervous system tuberculosis, with separate subdivisions for meningitis and meningeal tuberculoma. A18 groups other organs by site, including bones and joints, the genitourinary system, intestines, skin, eyes, ears, and adrenal glands. A19 distinguishes acute miliary tuberculosis at one specified site from multiple sites and unspecified sites, alongside other and unspecified miliary tuberculosis.
Questions About This Page
How many codes are in the A15-A19 range?
The A15-A19 range contains 61 ICD-10-CM diagnosis codes in FY 2027. 51 of them are billable, and the rest are category headers that organize the section.
What conditions does A15-A19 cover?
The range covers tuberculosis. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
