ICD-10-CM 2027
ICD-10 code for endophthalmitis
Unspecified purulent endophthalmitis, unspecified eye
From the official ICD-10-CM alphabetic index entry “Endophthalmitis (acute) (infective) (metastatic) (subacute)”. Page updated September 29, 2026.
About coding endophthalmitis
The ICD-10-CM code for endophthalmitis is H44.009 (Unspecified purulent endophthalmitis, unspecified eye). The official index lists 8 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H44.009.
Within H44.00, choose H44.009 (unspecified eye) only when documentation doesn't support a more specific option: right eye (H44.001), left eye (H44.002) and bilateral (H44.003).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 121 (Acute Major Eye Infections with CC/MCC, relative weight 1.2255) and DRG 122 (Acute Major Eye Infections without CC/MCC, relative weight 0.7406), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific endophthalmitis codes (official index)
- bleb associated H59.4
- gonorrheal A54.39 — Other gonococcal eye infection
- in (due to)
- cysticercosis B69.1 — Cysticercosis of eye
- onchocerciasis B73.01 — Onchocerciasis with endophthalmitis
- toxocariasis B83.0 — Visceral larva migrans
- panuveitis
- parasitic H44.12 — Parasitic endophthalmitis, unspecified
- purulent H44.00 — Unspecified purulent endophthalmitis
- panophthalmitis
- vitreous abscess H44.02 — Vitreous abscess (chronic)
- specified NEC H44.19 — Other endophthalmitis
- sympathetic
Common questions about endophthalmitis ICD-10 codes
What is the ICD-10 code for endophthalmitis?
- H44.009 — Unspecified purulent endophthalmitis, unspecified eye. More specific codes apply when the documentation supports them: A54.39, B69.1, B73.01, B83.0 and others below.
What is the ICD-10 code for gonorrheal endophthalmitis?
- A54.39 — Other gonococcal eye infection.
What is the ICD-10 code for parasitic endophthalmitis?
- H44.12 — Parasitic endophthalmitis, unspecified (header code; choose a more specific subcode).
What is the ICD-10 code for purulent endophthalmitis?
- H44.00 — Unspecified purulent endophthalmitis (header code; choose a more specific subcode).
Is H44.009 billable?
- Yes. H44.009 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H44.009 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H44.009 as a principal diagnosis.
Is H44.009 a CC or MCC?
- H44.009 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.