H10.521 Angular blepharoconjunctivitis, right 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)

• 372.21 Angular blepharoconjunctivitis (approximate)

Code annotations containing back-references to H10.521

Back-references to H10.5

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

Nearby codes

• H10.511 Ligneous conjunctivitis, right eye
• H10.512 Ligneous conjunctivitis, left eye
• H10.513 Ligneous conjunctivitis, bilateral
• H10.519 Ligneous conjunctivitis, unspecified eye
• H10.52 Angular blepharoconjunctivitis
• H10.521 Angular blepharoconjunctivitis, right eye (this code)
• H10.522 Angular blepharoconjunctivitis, left eye
• H10.523 Angular blepharoconjunctivitis, bilateral
• H10.529 Angular blepharoconjunctivitis, unspecified eye
• H10.53 Contact blepharoconjunctivitis
• H10.531 Contact blepharoconjunctivitis, right eye