ICD-10 · PDGM grouping
B25 Cytomegaloviral disease
All 5 codes in the B25 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.
Codes in family
5
Can lead a claim
5
Cannot lead a claim
0
What CMS assigns to B25
All 5 codes group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases. Comorbidity subgroups: 1 toward Other Disorders of the Liver; 1 toward Pancreatitis, Cholelithiasis and Cholecystitis; 1 toward Whooping Cough and Pneumonia; 2 are assigned none. Every code can lead a claim.
- Other Disorders of the Liver
- Pancreatitis, Cholelithiasis and Cholecystitis
- Whooping Cough and Pneumonia: counts toward the high comorbidity tier only in an interaction pair.
Every code in B25
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 |
|---|---|---|---|---|
| B25.0 | Cytomegaloviral pneumonitis | Can lead a claim | K | Whooping Cough and Pneumonia |
| B25.1 | Cytomegaloviral hepatitis | Can lead a claim | K | Other Disorders of the Liver |
| B25.2 | Cytomegaloviral pancreatitis | Can lead a claim | K | Pancreatitis, Cholelithiasis and Cholecystitis |
| B25.8 | Other cytomegaloviral diseases | Can lead a claim | K | None |
| B25.9 | Cytomegaloviral disease, unspecified | Can lead a claim | K | 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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