ICD-10 H40.002
Billable / SpecificPreglaucoma, unspecified, left eye
About ICD-10-CM H40.002
ICD-10-CM code H40.002 represents Preglaucoma, unspecified, left eye. This is a billable/specific code in the Eye and Adnexa chapter (block H40). The 2026 edition of ICD-10-CM H40.002 became effective on October 1, 2025.
Medicare LCD Coverage for H40.002
Local Coverage Determinations (LCDs) from CMS MACs that list H40.002 as a covered diagnosis.
Showing top 10 of 45 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing H40.002.
5 Medicare
Convert H40.002 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 |
|---|---|---|
| H40.002 | 36500 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To H40.002
Other codes in section H40-H42 (Glaucoma).
ICD-10 H40.002, Billing FAQ
Is ICD-10 code H40.002 billable? +
Yes, H40.002 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 H40.002? +
Procedures frequently paired with H40.002 include: 76514, 92499.
What ICD-9 codes does H40.002 map to? +
Per CMS GEMs, H40.002 maps to ICD-9 codes: 36500. 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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