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B08.71 ICD-10-CM Code: Tanapox virus disease

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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Viral infections characterized by skin and mucous membrane lesions (B00-B09)

B08.71

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Tanapox virus disease

Tanapox is a rare viral infection caused by a poxvirus that typically causes skin lesions and fever. It is primarily found in Central and West Africa and spreads through contact with infected animals or people.

CMS-HCC V28

0

0

RAF 0

CMS-HCC V24

0

0

RAF 0

ACA/HHS

0

0

RAF 0

ESRD/PACE

0

0

RAF 0

RXHCC

0

0

RAF 0

Code Trumping

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Code Book Path

Official
B08Other viral infections characterized by skin and mucous membrane lesions, not elsewhere classified
B08.7Yatapoxvirus infections
B08.71Tanapox virus disease

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for B08.71 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for B08.71 in this effective period.

Related Child Codes

Official
B08.70Yatapoxvirus infection, unspecified
B08.72Yaba pox virus disease
B08.79Other yatapoxvirus infections

Includes

Official

ICD-10-CM does not list Includes notes for B08.71 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for B08.71 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for B08.71 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for B08.71 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for B08.71 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Verify documentation clearly states tanapox virus disease diagnosis, as this is a rare condition that may be confused with other poxviruses or skin conditions
Document any complications, secondary infections, or systemic manifestations separately, as the base code B08.71 represents the uncomplicated tanapox infection

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 B08.71 an HCC code?

No. B08.71 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

B08.71 is the ICD-10-CM diagnosis code for tanapox virus disease. Tanapox is a rare viral infection caused by a poxvirus that typically causes skin lesions and fever. It is primarily found in Central and West Africa and spreads through contact with infected animals or people. B08.71 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering viral infections characterized by skin and mucous membrane lesions (b00-b09).

B08.71 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 clearly states tanapox virus disease diagnosis, as this is a rare condition that may be confused with other poxviruses or skin conditions.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for B08.71 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • Verify documentation clearly states tanapox virus disease diagnosis, as this is a rare condition that may be confused with other poxviruses or skin conditions
  • Document any complications, secondary infections, or systemic manifestations separately, as the base code B08.71 represents the uncomplicated tanapox infection

Child Codes

Code Hierarchy

Work B08.71 in HCC Buddy

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