ICD-10 · PDGM grouping
H75 Other disorders of middle ear and mastoid in diseases classified elsewhere
All 8 codes in the H75 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
8
Can lead a claim
0
Cannot lead a claim
8
What CMS assigns to H75
None of the 8 codes is assigned a clinical group. None of the 8 is assigned a comorbidity subgroup. None can lead a claim. CMS attaches a code-first note to all 8.
Code first
CMS grouper convention 12, on all 8 codes. Code first:
- underlying disease
Every code in H75
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 |
|---|---|---|---|---|
| H75.0 Mastoiditis in infectious and parasitic diseases classified elsewhere | ||||
| H75.00 | Mastoiditis in infectious and parasitic diseases classified elsewhere, unspecified earCMS: Mastoiditis in infec/parastc dis classd elswhr, unsp ear | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| H75.01 | Mastoiditis in infectious and parasitic diseases classified elsewhere, right earCMS: Mastoiditis in infec/parastc diseases classd elswhr, r ear | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| H75.02 | Mastoiditis in infectious and parasitic diseases classified elsewhere, left earCMS: Mastoiditis in infec/parastc dis classd elswhr, left ear | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| H75.03 | Mastoiditis in infectious and parasitic diseases classified elsewhere, bilateralCMS: Mastoiditis in infec/parastc diseases classd elswhr, bi | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| H75.8 Other specified disorders of middle ear and mastoid in diseases classified elsewhere | ||||
| H75.80 | Other specified disorders of middle ear and mastoid in diseases classified elsewhere, unspecified earCMS: Oth disrd of mid ear and mast in dis classd elswhr, unsp ear | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| H75.81 | Other specified disorders of right middle ear and mastoid in diseases classified elsewhereCMS: Oth disrd of r mid ear and mastoid in diseases classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| H75.82 | Other specified disorders of left middle ear and mastoid in diseases classified elsewhereCMS: Oth disrd of l mid ear and mastoid in diseases classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| H75.83 | Other specified disorders of middle ear and mastoid in diseases classified elsewhere, bilateralCMS: Oth disrd of mid ear and mastoid in dis classd elswhr, bi | Cannot lead a claimManifestation 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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