ICD-10 · PDGM grouping
B25-B34 — Other viral diseases
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
Codes in range
55
No clinical group
2
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
42 of the 55 codes in B25-B34 group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases, but the range is not uniform — it spreads across 2 clinical groups. A further 2 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in B25-B34
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
Every code in B25-B34
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| B250 | Cytomegaloviral pneumonitis | K | Can lead a claim |
| B251 | Cytomegaloviral hepatitis | K | Can lead a claim |
| B252 | Cytomegaloviral pancreatitis | K | Can lead a claim |
| B258 | Other cytomegaloviral diseases | K | Can lead a claim |
| B259 | Cytomegaloviral disease, unspecified | K | Can lead a claim |
| B260 | Mumps orchitis | K | Can lead a claim |
| B261 | Mumps meningitis | B | Can lead a claim |
| B262 | Mumps encephalitis | B | Can lead a claim |
| B263 | Mumps pancreatitis | K | Can lead a claim |
| B2681 | Mumps hepatitis | K | Can lead a claim |
| B2682 | Mumps myocarditis | K | Can lead a claim |
| B2683 | Mumps nephritis | K | Can lead a claim |
| B2684 | Mumps polyneuropathy | B | Can lead a claim |
| B2685 | Mumps arthritis | K | Can lead a claim |
| B2689 | Other mumps complications | K | Can lead a claim |
| B269 | Mumps without complication | K | Can lead a claim |
| B2700 | Gammaherpesviral mononucleosis without complication | K | Can lead a claim |
| B2701 | Gammaherpesviral mononucleosis with polyneuropathy | B | Can lead a claim |
| B2702 | Gammaherpesviral mononucleosis with meningitis | B | Can lead a claim |
| B2709 | Gammaherpesviral mononucleosis with other complications | K | Can lead a claim |
| B2710 | Cytomegaloviral mononucleosis without complications | K | Can lead a claim |
| B2711 | Cytomegaloviral mononucleosis with polyneuropathy | B | Can lead a claim |
| B2712 | Cytomegaloviral mononucleosis with meningitis | B | Can lead a claim |
| B2719 | Cytomegaloviral mononucleosis with other complication | K | Can lead a claim |
| B2780 | Other infectious mononucleosis without complication | K | Can lead a claim |
| B2781 | Other infectious mononucleosis with polyneuropathy | B | Can lead a claim |
| B2782 | Other infectious mononucleosis with meningitis | B | Can lead a claim |
| B2789 | Other infectious mononucleosis with other complication | K | Can lead a claim |
| B2790 | Infectious mononucleosis, unspecified without complication | K | Can lead a claim |
| B2791 | Infectious mononucleosis, unspecified with polyneuropathy | B | Can lead a claim |
| B2792 | Infectious mononucleosis, unspecified with meningitis | B | Can lead a claim |
| B2799 | Infectious mononucleosis, unsp with other complication | K | Can lead a claim |
| B300 | Keratoconjunctivitis due to adenovirus | K | Can lead a claim |
| B301 | Conjunctivitis due to adenovirus | K | Can lead a claim |
| B302 | Viral pharyngoconjunctivitis | K | Can lead a claim |
| B303 | Acute epidemic hemorrhagic conjunctivitis (enteroviral) | K | Can lead a claim |
| B308 | Other viral conjunctivitis | K | Can lead a claim |
| B309 | Viral conjunctivitis, unspecified | K | Can lead a claim |
| B330 | Epidemic myalgia | K | Can lead a claim |
| B331 | Ross River disease | K | Can lead a claim |
| B3320 | Viral carditis, unspecified | K | Can lead a claim |
| B3321 | Viral endocarditis | K | Can lead a claim |
| B3322 | Viral myocarditis | K | Can lead a claim |
| B3323 | Viral pericarditis | K | Can lead a claim |
| B3324 | Viral cardiomyopathy | K | Can lead a claim |
| B333 | Retrovirus infections, not elsewhere classified | K | Can lead a claim |
| B334 | Hantavirus (cardio)-pulmonary syndrome [HPS] [HCPS] | K | Can lead a claim |
| B338 | Other specified viral diseases | K | Can lead a claim |
| B340 | Adenovirus infection, unspecified | K | Can lead a claim |
| B341 | Enterovirus infection, unspecified | K | Can lead a claim |
| B342 | Coronavirus infection, unspecified | K | Can lead a claim |
| B343 | Parvovirus infection, unspecified | K | Can lead a claim |
| B344 | Papovavirus infection, unspecified | K | Can lead a claim |
| B348 | Other viral infections of unspecified site | None | Cannot lead a claim |
| B349 | Viral infection, unspecified | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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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