ICD-10-CM 2027
ICD-10 code for retina disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › retina”. Page updated September 29, 2026.
About coding retina disorder
The ICD-10-CM code for retina disorder is H35.9 (Unspecified retinal disorder). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H35.9.
Within H35, choose H35.9 (Unspecified retinal disorder) only when documentation doesn't support a more specific option: background retinopathy and retinal vascular changes (H35.0), retinopathy of prematurity (H35.1), other non-diabetic proliferative retinopathy (H35.2), degeneration of macula and posterior pole (H35.3), peripheral retinal degeneration (H35.4), hereditary retinal dystrophy (H35.5), retinal hemorrhage (H35.6), separation of retinal layers (H35.7) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), 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 retina disorder codes (official index)
- angioid streaks H35.33 — Angioid streaks of macula
- changes in vascular appearance H35.01 — Changes in retinal vascular appearance
- degeneration
- dystrophy (hereditary)
- edema H35.81 — Retinal edema
- hemorrhage
- ischemia H35.82 — Retinal ischemia
- macular degeneration
- microaneurysms H35.04 — Retinal micro-aneurysms, unspecified
- microvascular abnormality NEC H35.09 — Other intraretinal microvascular abnormalities
- neovascularization
- retinopathy
- separation of layers H35.70 — Unspecified separation of retinal layers
- central serous chorioretinopathy H35.71 — Central serous chorioretinopathy
- pigment epithelium detachment (serous) H35.72 — Serous detachment of retinal pigment epithelium
- hemorrhagic H35.73 — Hemorrhagic detachment of retinal pigment epithelium
- specified type NEC H35.89 — Other specified retinal disorders
- telangiectasis
- vasculitis
Common questions about retina disorder ICD-10 codes
What is the ICD-10 code for retina disorder?
- H35.9 — Unspecified retinal disorder. More specific codes apply when the documentation supports them: H35.33, H35.01, H35.81, H35.82 and others below.
What is the ICD-10 code for angioid streaks retina disorder?
- H35.33 — Angioid streaks of macula.
What is the ICD-10 code for changes in vascular appearance retina disorder?
- H35.01 — Changes in retinal vascular appearance (header code; choose a more specific subcode).
What is the ICD-10 code for edema retina disorder?
- H35.81 — Retinal edema.
What is the ICD-10 code for ischemia retina disorder?
- H35.82 — Retinal ischemia.
What is the ICD-10 code for microaneurysms retina disorder?
- H35.04 — Retinal micro-aneurysms, unspecified (header code; choose a more specific subcode).
What is the ICD-10 code for microvascular abnormality nec retina disorder?
- H35.09 — Other intraretinal microvascular abnormalities.
Is H35.9 billable?
- Yes. H35.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H35.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H35.9 as a principal diagnosis.
Is H35.9 a CC or MCC?
- No. H35.9 is neither a CC nor an MCC under MS-DRG v44.0.