A15.0 ICD-10-CM Code: Tuberculosis of lung
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Tuberculosis (A15-A19)
A15.0
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceTuberculosis of lung
This code represents a bacterial infection of the lungs caused by tuberculosis, a contagious disease that primarily affects the respiratory system. It indicates active tuberculosis disease localized to the lung tissue.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Tuberculous bronchiectasis
- Tuberculous fibrosis of lung
- Tuberculous pneumonia
- Tuberculous pneumothorax
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A15.0 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for A15.0 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for A15.0 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A15.0 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A15.0 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A15.0 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is A15.0 an HCC code?
No. A15.0 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- A15.0
- Description
- Tuberculosis of lung
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
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
A15.0 is the ICD-10-CM diagnosis code for tuberculosis of lung. This code represents a bacterial infection of the lungs caused by tuberculosis, a contagious disease that primarily affects the respiratory system. It indicates active tuberculosis disease localized to the lung tissue. A15.0 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering tuberculosis (a15-a19).
A15.0 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 whether the tuberculosis is drug-susceptible or drug-resistant, as this may require additional coding with a fifth character to specify resistance patterns (e.g., A15.0 for unspecified drug susceptibility).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A15.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify whether the tuberculosis is drug-susceptible or drug-resistant, as this may require additional coding with a fifth character to specify resistance patterns (e.g., A15.0 for unspecified drug susceptibility)
- •Confirm the patient has pulmonary TB (lung involvement) rather than extrapulmonary TB affecting other organs, as this affects code selection and treatment protocols