H21.89 — Other specified disorders of iris and ciliary body
H21.89 is a billable, specific ICD-10-CM code for other specified disorders of iris and ciliary body. It is valid for submission on a claim.
Risk adjustment
H21.89 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
H21.89 is named in 15 Medicare coverage policies — 15 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53060Billing and Coding: Ophthalmology: Extended Ophthalmoscopy and Fundus Photography
- A56453Billing and Coding: Cataract Extraction
- A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A56544Billing and Coding: Cataract Extraction
How H21.89 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to H21.89.
- Iridodonesis
- Deformity›iris(acquired)
- Disruption›ciliary body NEC
- Disruption›iris NEC
- Ectropion›iris
- Ectropion›uvea
- Edema, edematous›iris
- Retroversion, retroverted›iris
- Disease, diseased›ciliary body›specified NEC
- Disease, diseased›iris›specified NEC
- Disorder›iris›specified type NEC
- Prolapse, prolapsed›iris›nontraumatic
Related codes at this level
Codes that share H21.8. If H21.89 is not quite right, the correct code is usually one of these.
Questions about H21.89
- Is H21.89 a billable ICD-10-CM code?
- Yes. H21.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does H21.89 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Disorders of sclera, cornea, iris and ciliary body (H15-H22).