A15.5 ICD-10-CM Code: Tuberculosis of larynx, trachea and bronchus
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Tuberculosis (A15-A19)
A15.5
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceTuberculosis of larynx, trachea and bronchus
This is a tuberculosis infection that affects the voice box (larynx), windpipe (trachea), and/or the airways leading to the lungs (bronchus). It is a serious respiratory condition caused by the tuberculosis bacteria spreading to these upper and lower airway structures.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
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Code Book Path
Inclusion Terms
Official- Tuberculosis of bronchus
- Tuberculosis of glottis
- Tuberculosis of larynx
- Tuberculosis of trachea
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A15.5 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for A15.5 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for A15.5 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A15.5 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A15.5 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A15.5 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is A15.5 an HCC code?
No. A15.5 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A15.5 is the ICD-10-CM diagnosis code for tuberculosis of larynx, trachea and bronchus. This is a tuberculosis infection that affects the voice box (larynx), windpipe (trachea), and/or the airways leading to the lungs (bronchus). It is a serious respiratory condition caused by the tuberculosis bacteria spreading to these upper and lower airway structures. A15.5 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering tuberculosis (a15-a19).
A15.5 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Verify documentation specifies the exact site of TB involvement (larynx, trachea, or bronchus) as this code represents all three locations; if only one site is documented, ensure this is the most specific code available.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A15.5 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify documentation specifies the exact site of TB involvement (larynx, trachea, or bronchus) as this code represents all three locations; if only one site is documented, ensure this is the most specific code available
- •This code should be used in conjunction with a code from category A15.0-A15.9 to indicate pulmonary TB involvement, and confirm the patient has active TB disease rather than latent TB infection