FY2027
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ICD-10 Code for Keratitis

Also indexed as (nodular) (nonulcerative) (simple) (zonular)

The ICD-10-CM code for keratitis is H16.9 — Unspecified keratitis. This is the code the Alphabetic Index gives for keratitis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

BillableUnspecified

H16.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.

Which keratitis code should you use?

The Alphabetic Index lists 27 codes under Keratitis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

arborescensB00.52Herpesviral keratitis
areolarH16.11Not billableMacular keratitis
bullosaH16.8Other keratitis
deepH16.309Unspecified interstitial keratitis, unspecified eye
dendriticB00.52Herpesviral keratitis
disciformB00.52Herpesviral keratitis
filamentaryH16.12Not billableFilamentary keratitis
gonococcalA54.33Gonococcal keratitis
herpes, herpeticB00.52Herpesviral keratitis
interstitialH16.30Not billableUnspecified interstitial keratitis
macularH16.11Not billableMacular keratitis
nummularH16.11Not billableMacular keratitis
oyster shuckers'H16.8Other keratitis
petrificansH16.8Other keratitis
postmeaslesB05.81Measles keratitis and keratoconjunctivitis
punctateH16.14Not billablePunctate keratitis
purulentH16.8Other keratitis
rosaceaL71.8Other rosacea
sclerosingH16.33Not billableSclerosing keratitis
specified type NECH16.8Other keratitis
stellateH16.11Not billableMacular keratitis
striateH16.11Not billableMacular keratitis
superficialH16.10Not billableUnspecified superficial keratitis
suppurativeH16.8Other keratitis
syphiliticA50.31Late congenital syphilitic interstitial keratitis
trachomatousA71.1Active stage of trachoma
tuberculousA18.52Tuberculous keratitis
vesicularH16.8Other keratitis
xeroticH16.8Other keratitis

Keratitis deep

specified type NECH16.399Other interstitial and deep keratitis, unspecified eye

Keratitis disciform

varicellaB01.81Varicella keratitis

Keratitis herpes, herpetic

zosterB02.33Zoster keratitis

Keratitis in

acanthamebiasisB60.13Keratoconjunctivitis due to Acanthamoeba
adenovirusB30.0Keratoconjunctivitis due to adenovirus
exanthemaB09Unspecified viral infection characterized by skin and mucous membrane lesions
herpes virusB00.52Herpesviral keratitis
measlesB05.81Measles keratitis and keratoconjunctivitis
syphilisA50.31Late congenital syphilitic interstitial keratitis
tuberculosisA18.52Tuberculous keratitis
zosterB02.33Zoster keratitis

Keratitis interstitial

diffuseH16.32Not billableDiffuse interstitial keratitis
herpes, herpeticB00.52Herpesviral keratitis
sclerosingH16.33Not billableSclerosing keratitis
specified type NECH16.39Not billableOther interstitial and deep keratitis
syphiliticA50.31Late congenital syphilitic interstitial keratitis
tuberculousA18.52Tuberculous keratitis
herpes, herpetic › zosterB02.33Zoster keratitis

Keratitis punctata

leprosaA30.9Leprosy, unspecified
syphiliticA50.31Late congenital syphilitic interstitial keratitis

Keratitis trachomatous

sequelaeB94.0Sequelae of trachoma

Keratitis xerotic

vitamin A deficiencyE50.4Vitamin A deficiency with keratomalacia

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources