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ICD-10-CM 2027 diagnosis code

A15Respiratory tuberculosis

Not billable — use a more specific code

A15 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About A15

A15 is the ICD-10-CM diagnosis code for respiratory tuberculosis. It belongs to block A15-A19 (tuberculosis) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: A15.0 (lung), A15.4 (nodes), A15.5 (bronchus), A15.6 (pleurisy), A15.7 (tuberculosis), A15.8 (tuberculosis) and A15.9 (unspecified).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under A15

Notes that apply from higher levels

Instructions written at a parent level also apply to A15.

Broader instructions also apply from A15-A19 Tuberculosis and Chapter 1: Certain infectious and parasitic diseases.

Codes whose notes reference A15

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about A15

Is A15 billable?

No. A15 is a header code. Report one of its more specific subcodes instead.