ICD-10 · PDGM grouping
B97 Viral agents as the cause of diseases classified elsewhere
All 20 codes in the B97 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
20
Can lead a claim
0
Cannot lead a claim
20
What CMS assigns to B97
None of the 20 codes is assigned a clinical group. None of the 20 is assigned a comorbidity subgroup. None can lead a claim. CMS attaches a code-first note to 1 of the 20.
Code first
CMS grouper convention 5, on B97.4. Code first:
- otitis media (H65.-)
- related disorders, such as:
- upper respiratory infection (J06.9)
Every code in B97
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| B97.0 | Adenovirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.1 Enterovirus as the cause of diseases classified elsewhere | ||||
| B97.10 | Unspecified enterovirus as the cause of diseases classified elsewhereCMS: Unsp enterovirus as the cause of diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.11 | Coxsackievirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.12 | Echovirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.19 | Other enterovirus as the cause of diseases classified elsewhereCMS: Oth enterovirus as the cause of diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.2 Coronavirus as the cause of diseases classified elsewhere | ||||
| B97.21 | SARS-associated coronavirus as the cause of diseases classified elsewhereCMS: SARS-associated coronavirus causing diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.29 | Other coronavirus as the cause of diseases classified elsewhereCMS: Oth coronavirus as the cause of diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.3 Retrovirus as the cause of diseases classified elsewhere | ||||
| B97.30 | Unspecified retrovirus as the cause of diseases classified elsewhereCMS: Unsp retrovirus as the cause of diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.31 | Lentivirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.32 | Oncovirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.33 | Human T-cell lymphotrophic virus, type I [HTLV-I] as the cause of diseases classified elsewhereCMS: HTLV-I as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.34 | Human T-cell lymphotrophic virus, type II [HTLV-II] as the cause of diseases classified elsewhereCMS: HTLV-II as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.35 | Human immunodeficiency virus, type 2 [HIV 2] as the cause of diseases classified elsewhereCMS: HIV 2 as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.39 | Other retrovirus as the cause of diseases classified elsewhereCMS: Oth retrovirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.4 | Respiratory syncytial virus as the cause of diseases classified elsewhereCMS: Respiratory syncytial virus causing diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.5 | Reovirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.6 | Parvovirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.7 | Papillomavirus as the cause of diseases classified elsewhere | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.8 Other viral agents as the cause of diseases classified elsewhere | ||||
| B97.81 | Human metapneumovirus as the cause of diseases classified elsewhereCMS: Human metapneumovirus as the cause of diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| B97.89 | Other viral agents as the cause of diseases classified elsewhereCMS: Oth viral agents as the cause of diseases classd elswhr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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