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B97.81 ICD-10-CM Code: Human metapneumovirus as the cause of diseases classified elsewhere

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FY 2026 Apr update / Certain infectious and parasitic diseases (A00-B99) / Bacterial and viral infectious agents (B95-B97)

B97.81

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

Human metapneumovirus as the cause of diseases classified elsewhere

Human metapneumovirus is identified as the underlying cause of another disease or condition being treated.

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
B97Viral agents as the cause of diseases classified elsewhere
B97.8Other viral agents as the cause of diseases classified elsewhere
B97.81Human metapneumovirus as the cause of diseases classified elsewhere

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for B97.81 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for B97.81 in this effective period.

Related Child Codes

Official
B97.89Other viral agents as the cause of diseases classified elsewhere

Includes

Official

ICD-10-CM does not list Includes notes for B97.81 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for B97.81 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for B97.81 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for B97.81 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for B97.81 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Use this code as a secondary diagnosis with the primary code describing the respiratory or systemic condition caused by human metapneumovirus
This virus commonly causes respiratory infections in children and immunocompromised patients; pair with the specific disease manifestation

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 B97.81 an HCC code?

No. B97.81 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

B97.81 is the ICD-10-CM diagnosis code for human metapneumovirus as the cause of diseases classified elsewhere. Human metapneumovirus is identified as the underlying cause of another disease or condition being treated. B97.81 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering bacterial and viral infectious agents (b95-b97).

B97.81 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.

Use this code as a secondary diagnosis with the primary code describing the respiratory or systemic condition caused by human metapneumovirus.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for B97.81 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • Use this code as a secondary diagnosis with the primary code describing the respiratory or systemic condition caused by human metapneumovirus
  • This virus commonly causes respiratory infections in children and immunocompromised patients; pair with the specific disease manifestation

Child Codes

Code Hierarchy

More on B97.81

Related condition guides

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