ICD-10 H55.00
Billable / SpecificUnspecified nystagmus
About ICD-10-CM H55.00
ICD-10-CM code H55.00 represents Unspecified nystagmus. This is a billable/specific code in the Eye and Adnexa chapter (block H55). The 2026 edition of ICD-10-CM H55.00 became effective on October 1, 2025.
Medicare LCD Coverage for H55.00
Local Coverage Determinations (LCDs) from CMS MACs that list H55.00 as a covered diagnosis.
Showing top 10 of 51 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing H55.00.
5 Medicare
CPT Codes Commonly Billed with H55.00
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 H55.00 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 |
|---|---|---|
| H55.00 | 37950 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To H55.00
Other codes in section H55-H57 (Other disorders of eye and adnexa).
ICD-10 H55.00, Billing FAQ
Is ICD-10 code H55.00 billable? +
Yes, H55.00 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What ICD-9 codes does H55.00 map to? +
Per CMS GEMs, H55.00 maps to ICD-9 codes: 37950. 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 May 31, 2026.
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