ICD-10 · PDGM grouping
H66 Suppurative and unspecified otitis media
All 36 codes in the H66 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
36
Can lead a claim
27
Cannot lead a claim
9
What CMS assigns to H66
27 of the 36 codes group to MMTA - Other; 9 are assigned no clinical group. None of the 36 is assigned a comorbidity subgroup. 27 of the 36 can lead a claim.
Every code in H66
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 |
|---|---|---|---|---|
| H66.0 Acute suppurative otitis media | ||||
| H66.00 Acute suppurative otitis media without spontaneous rupture of ear drum | ||||
| H66.001 | Acute suppurative otitis media without spontaneous rupture of ear drum, right earCMS: Acute suppr otitis media w/o spon rupt ear drum, right ear | Can lead a claim | A | None |
| H66.002 | Acute suppurative otitis media without spontaneous rupture of ear drum, left earCMS: Acute suppr otitis media w/o spon rupt ear drum, left ear | Can lead a claim | A | None |
| H66.003 | Acute suppurative otitis media without spontaneous rupture of ear drum, bilateralCMS: Acute suppr otitis media w/o spon rupt ear drum, bilateral | Can lead a claim | A | None |
| H66.004 | Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, right earCMS: Ac suppr otitis media w/o spon rupt ear drum, recur, r ear | Can lead a claim | A | None |
| H66.005 | Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, left earCMS: Ac suppr otitis media w/o spon rupt ear drum, recur, l ear | Can lead a claim | A | None |
| H66.006 | Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, bilateralCMS: Acute suppr otitis media w/o spon rupt ear drum, recur, bi | Can lead a claim | A | None |
| H66.007 | Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, unspecified earCMS: Ac suppr otitis media w/o spon rupt ear drum,recur, unsp ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.009 | Acute suppurative otitis media without spontaneous rupture of ear drum, unspecified earCMS: Acute suppr otitis media w/o spon rupt ear drum, unsp ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.01 Acute suppurative otitis media with spontaneous rupture of ear drum | ||||
| H66.011 | Acute suppurative otitis media with spontaneous rupture of ear drum, right earCMS: Acute suppr otitis media w spon rupt ear drum, right ear | Can lead a claim | A | None |
| H66.012 | Acute suppurative otitis media with spontaneous rupture of ear drum, left earCMS: Acute suppr otitis media w spon rupt ear drum, left ear | Can lead a claim | A | None |
| H66.013 | Acute suppurative otitis media with spontaneous rupture of ear drum, bilateralCMS: Acute suppr otitis media w spon rupt ear drum, bilateral | Can lead a claim | A | None |
| H66.014 | Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, right earCMS: Acute suppr otitis media w spon rupt ear drum, recur, r ear | Can lead a claim | A | None |
| H66.015 | Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, left earCMS: Acute suppr otitis media w spon rupt ear drum, recur, l ear | Can lead a claim | A | None |
| H66.016 | Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, bilateralCMS: Acute suppr otitis media w spon rupt ear drum, recurrent, bi | Can lead a claim | A | None |
| H66.017 | Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, unspecified earCMS: Ac suppr otitis media w spon rupt ear drum, recur, unsp ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.019 | Acute suppurative otitis media with spontaneous rupture of ear drum, unspecified earCMS: Acute suppr otitis media w spon rupt ear drum, unsp ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.1 Chronic tubotympanic suppurative otitis media | ||||
| H66.10 | Chronic tubotympanic suppurative otitis media, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.11 | Chronic tubotympanic suppurative otitis media, right ear | Can lead a claim | A | None |
| H66.12 | Chronic tubotympanic suppurative otitis media, left ear | Can lead a claim | A | None |
| H66.13 | Chronic tubotympanic suppurative otitis media, bilateral | Can lead a claim | A | None |
| H66.2 Chronic atticoantral suppurative otitis media | ||||
| H66.20 | Chronic atticoantral suppurative otitis media, unspecified earCMS: Chronic atticoantral suppurative otitis media, unsp ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.21 | Chronic atticoantral suppurative otitis media, right ear | Can lead a claim | A | None |
| H66.22 | Chronic atticoantral suppurative otitis media, left ear | Can lead a claim | A | None |
| H66.23 | Chronic atticoantral suppurative otitis media, bilateral | Can lead a claim | A | None |
| H66.3 Other chronic suppurative otitis media | ||||
| H66.3X Other chronic suppurative otitis media | ||||
| H66.3X1 | Other chronic suppurative otitis media, right ear | Can lead a claim | A | None |
| H66.3X2 | Other chronic suppurative otitis media, left ear | Can lead a claim | A | None |
| H66.3X3 | Other chronic suppurative otitis media, bilateral | Can lead a claim | A | None |
| H66.3X9 | Other chronic suppurative otitis media, unspecified ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.4 Suppurative otitis media, unspecified | ||||
| H66.40 | Suppurative otitis media, unspecified, unspecified ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.41 | Suppurative otitis media, unspecified, right ear | Can lead a claim | A | None |
| H66.42 | Suppurative otitis media, unspecified, left ear | Can lead a claim | A | None |
| H66.43 | Suppurative otitis media, unspecified, bilateral | Can lead a claim | A | None |
| H66.9 Otitis media, unspecified | ||||
| H66.90 | Otitis media, unspecified, unspecified ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H66.91 | Otitis media, unspecified, right ear | Can lead a claim | A | None |
| H66.92 | Otitis media, unspecified, left ear | Can lead a claim | A | None |
| H66.93 | Otitis media, unspecified, bilateral | Can lead a claim | A | 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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