ICD-10 H20.12
Billable / SpecificChronic iridocyclitis, left eye
About ICD-10-CM H20.12
ICD-10-CM code H20.12 represents Chronic iridocyclitis, left eye. This is a billable/specific code in the Eye and Adnexa chapter (block H20). The 2026 edition of ICD-10-CM H20.12 became effective on October 1, 2025.
Medicare LCD Coverage for H20.12
Local Coverage Determinations (LCDs) from CMS MACs that list H20.12 as a covered diagnosis.
Showing top 10 of 55 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing H20.12.
5 Medicare
CPT Codes Commonly Billed with H20.12
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Convert H20.12 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| H20.12 | 36410 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To H20.12
Other codes in section H15-H22 (Disorders of sclera, cornea, iris and ciliary body).
ICD-10 H20.12, Billing FAQ
Is ICD-10 code H20.12 billable? +
Yes, H20.12 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with H20.12? +
Procedures frequently paired with H20.12 include: J1745, Q5104, Q5121, Q5103.
What ICD-9 codes does H20.12 map to? +
Per CMS GEMs, H20.12 maps to ICD-9 codes: 36410. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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