ICD-10 G52.0
Billable / SpecificDisorders of olfactory nerve
About ICD-10-CM G52.0
ICD-10-CM code G52.0 represents Disorders of olfactory nerve. This is a billable/specific code in the Nervous System chapter (block G52). The 2026 edition of ICD-10-CM G52.0 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under G52.0. Per CMS ICD-10-CM Tabular 2026.
- Disorders of 1st cranial nerve
Medicare LCD Coverage for G52.0
Local Coverage Determinations (LCDs) from CMS MACs that list G52.0 as a covered diagnosis.
Showing top 10 of 169 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing G52.0.
2 Cigna
5 Medicare
CPT Codes Commonly Billed with G52.0
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 G52.0 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 |
|---|---|---|
| G52.0 | 3520 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To G52.0
Other codes in section G50-G59 (Nerve, nerve root and plexus disorders).
ICD-10 G52.0, Billing FAQ
Is ICD-10 code G52.0 billable? +
Yes, G52.0 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to G52.0? +
ICD-10 G52.0 includes: Disorders of 1st cranial nerve.
What ICD-9 codes does G52.0 map to? +
Per CMS GEMs, G52.0 maps to ICD-9 codes: 3520. 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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