H10 – Conjunctivitis
ICD-10-CM 2027 diagnosis code · Disorders of conjunctiva
ICD-10-CM code
H10
- Code
H10(claims format:H10)- Description
- Conjunctivitis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 7. Diseases of the eye and adnexa (H00-H59)
- Block
- H10-H11 Disorders of conjunctiva
Billable codes under H10
H10 is a header code and cannot be used on claims. Choose the most specific code:
- H10.0 – Mucopurulent conjunctivitisHeader (more codes below)
- H10.1 – Acute atopic conjunctivitisHeader (more codes below)
- H10.2 – Other acute conjunctivitisHeader (more codes below)
- H10.3 – Unspecified acute conjunctivitisHeader (more codes below)
- H10.4 – Chronic conjunctivitisHeader (more codes below)
- H10.5 – BlepharoconjunctivitisHeader (more codes below)
- H10.8 – Other conjunctivitisHeader (more codes below)
- H10.9 – Unspecified conjunctivitisBillable
Notes for H10
Excludes1 (not coded here):
- keratoconjunctivitis (H16.2-)
Frequently asked questions
What is ICD-10 code H10?
H10 is the ICD-10-CM code for conjunctivitis, in the block H10-H11 (Disorders of conjunctiva).
Is H10 a billable code?
No. H10 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.