ICD-10 H28
Billable / SpecificCataract in diseases classified elsewhere
About ICD-10-CM H28
ICD-10-CM code H28 represents Cataract in diseases classified elsewhere. This is a billable/specific code in the Eye and Adnexa chapter (block H28). The 2026 edition of ICD-10-CM H28 became effective on October 1, 2025.
Type 1 Excludes
Pure excludes, these codes can never be coded together with H28. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- cataract in diabetes mellitus (E08.36, E09.36, E10.36, E11.36, E13.36)
Coding Notes
Code First
- underlying disease, such as:
- hypoparathyroidism (E20.-)
- myotonia (G71.1-)
- myxedema (E03.-)
- protein-calorie malnutrition (E40-E46)
Medicare LCD Coverage for H28
Local Coverage Determinations (LCDs) from CMS MACs that list H28 as a covered diagnosis.
Showing top 10 of 74 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing H28.
5 Medicare
CPT Codes Commonly Billed with H28
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert H28 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 |
|---|---|---|
| H28 | 36644 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To H28
Other codes in section H25-H28 (Disorders of lens).
ICD-10 H28, Billing FAQ
Is ICD-10 code H28 billable? +
Yes, H28 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for H28? +
Type 1 Excludes (never code together with H28): cataract in diabetes mellitus (E08.36, E09.36, E10.36, E11.36, E13.36)
What ICD-9 codes does H28 map to? +
Per CMS GEMs, H28 maps to ICD-9 codes: 36644. 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 June 1, 2026.
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