H16.03 – Corneal ulcer with hypopyon

ICD-10-CM 2027 diagnosis code · Disorders of sclera, cornea, iris and ciliary body

Non-billable header

ICD-10-CM code H16.03

Code: H16.03 (claims format: H1603)
Description: Corneal ulcer with hypopyon
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: H15-H22 Disorders of sclera, cornea, iris and ciliary body
Parent codes: H16 › H16.0

Billable codes under H16.03

H16.03 is a header code and cannot be used on claims. Choose the most specific code:

H16.031 – Corneal ulcer with hypopyon, right eyeBillable
H16.032 – Corneal ulcer with hypopyon, left eyeBillable
H16.033 – Corneal ulcer with hypopyon, bilateralBillable
H16.039 – Corneal ulcer with hypopyon, unspecified eyeBillable

Index terms for H16.03

Entries in the ICD-10-CM alphabetic index that lead to this code:

Ulcer, ulcerated, ulcerating, ulceration, ulcerative, cornea, with hypopyon

Related codes in H16.0

H16.00 – Unspecified corneal ulcerHeader
H16.01 – Central corneal ulcerHeader
H16.02 – Ring corneal ulcerHeader
H16.04 – Marginal corneal ulcerHeader
H16.05 – Mooren's corneal ulcerHeader
H16.06 – Mycotic corneal ulcerHeader
H16.07 – Perforated corneal ulcerHeader

Frequently asked questions

What is ICD-10 code H16.03?

H16.03 is the ICD-10-CM code for corneal ulcer with hypopyon, in the block H15-H22 (Disorders of sclera, cornea, iris and ciliary body).

Is H16.03 a billable code?

No. H16.03 is a header code with more specific child codes; report one of the billable codes listed above.

What category does H16.03 belong to?

It belongs to category H16 – Keratitis.

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.