ICD-10-CM 2027 diagnosis code

H10.50Unspecified blepharoconjunctivitis

Not billable — use a more specific code

H10.50 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Looking up by condition? See ICD-10 code for Blepharoconjunctivitis.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About H10.50

H10.50 is the ICD-10-CM diagnosis code for unspecified blepharoconjunctivitis. It belongs to category H10 (conjunctivitis), block H10-H11 (disorders of conjunctiva) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within H10.5, choose H10.50 (Unspecified blepharoconjunctivitis) only when documentation doesn't support a more specific option: Ligneous conjunctivitis (H10.51), Angular blepharoconjunctivitis (H10.52) and contact blepharoconjunctivitis (H10.53).

To report this condition, pick the subcode that matches the documentation: H10.501 (right eye), H10.502 (left eye), H10.503 (bilateral) and H10.509 (unspecified eye).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under H10.50

Notes that apply from higher levels

Instructions written at a parent level also apply to H10.50.

› From H10 Conjunctivitis

Excludes1

keratoconjunctivitis (H16.2-)

Broader instructions also apply from Chapter 7: Diseases of the eye and adnexa.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to H10.50.

Blepharoconjunctivitis

Code history

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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about H10.50

Is H10.50 billable?: No. H10.50 is a header code. Report one of its more specific subcodes instead.