A19.2 ICD-10-CM Code: Acute miliary tuberculosis, unspecified
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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Tuberculosis (A15-A19)
A19.2
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceAcute miliary tuberculosis, unspecified
This code describes a severe form of tuberculosis where the infection has spread rapidly throughout the body, affecting multiple organs simultaneously. It occurs when tuberculosis bacteria enter the bloodstream and distribute widely, creating small lesions that resemble millet seeds (hence the term 'miliary').
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
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for A19.2 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for A19.2 in this effective period.
Related Child Codes
Includes
Official- disseminated tuberculosis
- generalized tuberculosis
- tuberculous polyserositis
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for A19.2 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for A19.2 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for A19.2 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for A19.2 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 A19.2 an HCC code?
No. A19.2 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
A19.2 is the ICD-10-CM diagnosis code for acute miliary tuberculosis, unspecified. This code describes a severe form of tuberculosis where the infection has spread rapidly throughout the body, affecting multiple organs simultaneously. It occurs when tuberculosis bacteria enter the bloodstream and distribute widely, creating small lesions that resemble millet seeds (hence the term 'miliary'). A19.2 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering tuberculosis (a15-a19).
A19.2 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 that the tuberculosis is confirmed as miliary (disseminated) type and acute in presentation before assigning this code; do not use if a specific site of miliary TB is documented, as more specific codes exist.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A19.2 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify that the tuberculosis is confirmed as miliary (disseminated) type and acute in presentation before assigning this code; do not use if a specific site of miliary TB is documented, as more specific codes exist
- •This code indicates unspecified site involvement; if documentation specifies affected organs (such as meninges, lungs, or other sites), use the more specific miliary TB codes instead