All ICD10 Codes

H16

Non-Billable
ChapterH00–H59
Rankcategory
Description

Keratitis

About ICD-10-CM code H16

The ICD-10-CM tabular list places Keratitis at code H16, inside H00-H59 Diseases of the Eye and Adnexa, within Disorders of sclera, cornea, iris and ciliary body (H15-H22). You should not submit this code on claims since it lacks billing specificity, use a child code.

Use a more specific code (2 billable, 5 non-billable)
H16.0Corneal ulcerhas subcodesH16.1Other and unspecified superficial keratitis without conjunctivitishas subcodesH16.2Keratoconjunctivitishas subcodesH16.3Interstitial and deep keratitishas subcodesH16.4Corneal neovascularizationhas subcodesH16.8Other keratitisH16.9Unspecified keratitis
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 7: Diseases of the Eye and Adnexa (H00-H59).

CH7 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury (trauma) of eye and orbit (S05.-)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)

Clinical Hierarchy

BillableHas subcodes
CH7Diseases of the eye and adnexa (H00-H59)
H15-H22Disorders of sclera, cornea, iris and ciliary body (H15-H22)
H16KeratitisNot billable
H16.0Corneal ulcerSubcodes
H16.1Other and unspecified superficial keratitis without conjunctivitisSubcodes
H16.2KeratoconjunctivitisSubcodes
H16.3Interstitial and deep keratitisSubcodes
H16.4Corneal neovascularizationSubcodes
H16.8Other keratitisBillable
H16.9Unspecified keratitisBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H16:

chapterCH7
Diseases of the eye and adnexa (H00-H59)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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