ICD-10 · PDGM grouping
H10 Conjunctivitis
All 72 codes in the H10 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
72
Can lead a claim
48
Cannot lead a claim
24
What CMS assigns to H10
48 of the 72 codes group to MMTA - Other; 24 are assigned no clinical group. None of the 72 is assigned a comorbidity subgroup. 48 of the 72 can lead a claim. CMS attaches a code-first note to 8 of the 72.
Code first
CMS grouper convention 8, on H10.211, H10.212, H10.213, H10.219. Code first:
- , if applicable, toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
CMS grouper convention 47, on H10.821, H10.822, H10.823, H10.829. Code first:
- underlying rosacea dermatitis (L71.-)
Every code in H10
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 |
|---|---|---|---|---|
| H10.0 Mucopurulent conjunctivitis | ||||
| H10.01 Acute follicular conjunctivitis | ||||
| H10.011 | Acute follicular conjunctivitis, right eye | Can lead a claim | A | None |
| H10.012 | Acute follicular conjunctivitis, left eye | Can lead a claim | A | None |
| H10.013 | Acute follicular conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.019 | Acute follicular conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.02 Other mucopurulent conjunctivitis | ||||
| H10.021 | Other mucopurulent conjunctivitis, right eye | Can lead a claim | A | None |
| H10.022 | Other mucopurulent conjunctivitis, left eye | Can lead a claim | A | None |
| H10.023 | Other mucopurulent conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.029 | Other mucopurulent conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.1 Acute atopic conjunctivitis | ||||
| H10.10 | Acute atopic conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.11 | Acute atopic conjunctivitis, right eye | Can lead a claim | A | None |
| H10.12 | Acute atopic conjunctivitis, left eye | Can lead a claim | A | None |
| H10.13 | Acute atopic conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.2 Other acute conjunctivitis | ||||
| H10.21 Acute toxic conjunctivitis | ||||
| H10.211 | Acute toxic conjunctivitis, right eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.212 | Acute toxic conjunctivitis, left eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.213 | Acute toxic conjunctivitis, bilateral | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.219 | Acute toxic conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.22 Pseudomembranous conjunctivitis | ||||
| H10.221 | Pseudomembranous conjunctivitis, right eye | Can lead a claim | A | None |
| H10.222 | Pseudomembranous conjunctivitis, left eye | Can lead a claim | A | None |
| H10.223 | Pseudomembranous conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.229 | Pseudomembranous conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.23 Serous conjunctivitis, except viral | ||||
| H10.231 | Serous conjunctivitis, except viral, right eye | Can lead a claim | A | None |
| H10.232 | Serous conjunctivitis, except viral, left eye | Can lead a claim | A | None |
| H10.233 | Serous conjunctivitis, except viral, bilateral | Can lead a claim | A | None |
| H10.239 | Serous conjunctivitis, except viral, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.3 Unspecified acute conjunctivitis | ||||
| H10.30 | Unspecified acute conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.31 | Unspecified acute conjunctivitis, right eye | Can lead a claim | A | None |
| H10.32 | Unspecified acute conjunctivitis, left eye | Can lead a claim | A | None |
| H10.33 | Unspecified acute conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.4 Chronic conjunctivitis | ||||
| H10.40 Unspecified chronic conjunctivitis | ||||
| H10.401 | Unspecified chronic conjunctivitis, right eye | Can lead a claim | A | None |
| H10.402 | Unspecified chronic conjunctivitis, left eye | Can lead a claim | A | None |
| H10.403 | Unspecified chronic conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.409 | Unspecified chronic conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.41 Chronic giant papillary conjunctivitis | ||||
| H10.411 | Chronic giant papillary conjunctivitis, right eye | Can lead a claim | A | None |
| H10.412 | Chronic giant papillary conjunctivitis, left eye | Can lead a claim | A | None |
| H10.413 | Chronic giant papillary conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.419 | Chronic giant papillary conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.42 Simple chronic conjunctivitis | ||||
| H10.421 | Simple chronic conjunctivitis, right eye | Can lead a claim | A | None |
| H10.422 | Simple chronic conjunctivitis, left eye | Can lead a claim | A | None |
| H10.423 | Simple chronic conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.429 | Simple chronic conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.43 Chronic follicular conjunctivitis | ||||
| H10.431 | Chronic follicular conjunctivitis, right eye | Can lead a claim | A | None |
| H10.432 | Chronic follicular conjunctivitis, left eye | Can lead a claim | A | None |
| H10.433 | Chronic follicular conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.439 | Chronic follicular conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.44 | Vernal conjunctivitis | Can lead a claim | A | None |
| H10.45 | Other chronic allergic conjunctivitis | Can lead a claim | A | None |
| H10.5 Blepharoconjunctivitis | ||||
| H10.50 Unspecified blepharoconjunctivitis | ||||
| H10.501 | Unspecified blepharoconjunctivitis, right eye | Can lead a claim | A | None |
| H10.502 | Unspecified blepharoconjunctivitis, left eye | Can lead a claim | A | None |
| H10.503 | Unspecified blepharoconjunctivitis, bilateral | Can lead a claim | A | None |
| H10.509 | Unspecified blepharoconjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.51 Ligneous conjunctivitis | ||||
| H10.511 | Ligneous conjunctivitis, right eye | Can lead a claim | A | None |
| H10.512 | Ligneous conjunctivitis, left eye | Can lead a claim | A | None |
| H10.513 | Ligneous conjunctivitis, bilateral | Can lead a claim | A | None |
| H10.519 | Ligneous conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.52 Angular blepharoconjunctivitis | ||||
| H10.521 | Angular blepharoconjunctivitis, right eye | Can lead a claim | A | None |
| H10.522 | Angular blepharoconjunctivitis, left eye | Can lead a claim | A | None |
| H10.523 | Angular blepharoconjunctivitis, bilateral | Can lead a claim | A | None |
| H10.529 | Angular blepharoconjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.53 Contact blepharoconjunctivitis | ||||
| H10.531 | Contact blepharoconjunctivitis, right eye | Can lead a claim | A | None |
| H10.532 | Contact blepharoconjunctivitis, left eye | Can lead a claim | A | None |
| H10.533 | Contact blepharoconjunctivitis, bilateral | Can lead a claim | A | None |
| H10.539 | Contact blepharoconjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.8 Other conjunctivitis | ||||
| H10.81 Pingueculitis | ||||
| H10.811 | Pingueculitis, right eye | Can lead a claim | A | None |
| H10.812 | Pingueculitis, left eye | Can lead a claim | A | None |
| H10.813 | Pingueculitis, bilateral | Can lead a claim | A | None |
| H10.819 | Pingueculitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.82 Rosacea conjunctivitis | ||||
| H10.821 | Rosacea conjunctivitis, right eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.822 | Rosacea conjunctivitis, left eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.823 | Rosacea conjunctivitis, bilateral | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.829 | Rosacea conjunctivitis, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H10.89 | Other conjunctivitis | Can lead a claim | A | None |
| H10.9 | Unspecified conjunctivitis | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | 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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