H10.509 Unspecified blepharoconjunctivitis, unspecified eye

Billable ICD-10-CM code, FY2026.

Applies from H10 Conjunctivitis

Excludes1 (never code together)

• keratoconjunctivitis (H16.2-)

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 372.20 Blepharoconjunctivitis, unspecified (approximate)

Code annotations containing back-references to H10.509

Back-references to H10.5

• Type 1 Excludes: H01.0 Blepharitis ("blepharoconjunctivitis (H10.5-)")

Nearby codes

• H10.5 Blepharoconjunctivitis
• H10.50 Unspecified blepharoconjunctivitis
• H10.501 Unspecified blepharoconjunctivitis, right eye
• H10.502 Unspecified blepharoconjunctivitis, left eye
• H10.503 Unspecified blepharoconjunctivitis, bilateral
• H10.509 Unspecified blepharoconjunctivitis, unspecified eye (this code)
• H10.51 Ligneous conjunctivitis
• H10.511 Ligneous conjunctivitis, right eye
• H10.512 Ligneous conjunctivitis, left eye
• H10.513 Ligneous conjunctivitis, bilateral
• H10.519 Ligneous conjunctivitis, unspecified eye