ICD-10 I78.1
Billable / SpecificNevus, non-neoplastic
About ICD-10-CM I78.1
ICD-10-CM code I78.1 represents Nevus, non-neoplastic. This is a billable/specific code in the Circulatory System chapter (block I78). The 2026 edition of ICD-10-CM I78.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I78.1. Per CMS ICD-10-CM Tabular 2026.
- Araneus nevus
- Senile nevus
- Spider nevus
- Stellar nevus
Type 1 Excludes
Pure excludes, these codes can never be coded together with I78.1. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- nevus NOS (D22.-)
- vascular NOS (Q82.5)
Type 2 Excludes
Not included here, the excluded code is not part of I78.1, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- blue nevus (D22.-)
- flammeus nevus (Q82.5)
- hairy nevus (D22.-)
- melanocytic nevus (D22.-)
- pigmented nevus (D22.-)
- portwine nevus (Q82.5)
- sanguineous nevus (Q82.5)
- strawberry nevus (Q82.5)
- verrucous nevus (Q82.5)
Medicare LCD Coverage for I78.1
Local Coverage Determinations (LCDs) from CMS MACs that list I78.1 as a covered diagnosis.
Showing top 10 of 139 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I78.1.
3 Medicare
CPT Codes Commonly Billed with I78.1
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 I78.1 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 |
|---|---|---|
| I78.1 | 4481 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I78.1
Other codes in section I70-I79 (Diseases of arteries, arterioles and capillaries).
ICD-10 I78.1, Billing FAQ
Is ICD-10 code I78.1 billable? +
Yes, I78.1 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 I78.1? +
ICD-10 I78.1 includes: Araneus nevus; Senile nevus; Spider nevus, and 1 more clinical synonyms.
What codes are Type 1 Excludes for I78.1? +
Type 1 Excludes (never code together with I78.1): nevus NOS (D22.-); vascular NOS (Q82.5)
What codes are Type 2 Excludes for I78.1? +
Type 2 Excludes (may be coded together when both conditions exist): blue nevus (D22.-); flammeus nevus (Q82.5); hairy nevus (D22.-)
What ICD-9 codes does I78.1 map to? +
Per CMS GEMs, I78.1 maps to ICD-9 codes: 4481. 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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