ICD10BillableValid for clinical use
ICD-10 Code I78.1: Nevus, non-neoplastic
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents nevus, non-neoplastic in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I70-I79Diseases of arteries, arterioles and capillaries
category
I78Diseases of capillaries
currentI78
Official coding notes
Inclusion terms
- Araneus nevus
- Senile nevus
- Spider nevus
- Stellar nevus
Excludes1 (do not code together)
- nevus NOS (D22.-)
- vascular NOS (Q82.5)
Excludes2 (may code together if documented)
- 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)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
CardiologistGeneral Physician
Related codes
Sibling codes
Coverage-related procedures and services
CPT 17111high
DESTRUCTION (EG, LASER SURGERY, ELECTROSURGERY, CRYOSURGERY, CHEMOSURGERY, SURGICAL CURETTEMENT), OF BENIGN LESIONS OTHER THAN SKIN TAGS OR CUTANEOUS VASCULAR PROLIFERATIVE LESIONS; 15 OR MORE LESIONS
Source: CMS coverage guidance
CPT 17110high
DESTRUCTION (EG, LASER SURGERY, ELECTROSURGERY, CRYOSURGERY, CHEMOSURGERY, SURGICAL CURETTEMENT), OF BENIGN LESIONS OTHER THAN SKIN TAGS OR CUTANEOUS VASCULAR PROLIFERATIVE LESIONS; UP TO 14 LESIONS
Source: CMS coverage guidance
CPT 11420high
EXCISION, BENIGN LESION INCLUDING MARGINS, EXCEPT SKIN TAG (UNLESS LISTED ELSEWHERE), SCALP, NECK, HANDS, FEET, GENITALIA; EXCISED DIAMETER 0.5 CM OR LESS
Source: CMS coverage guidance
CPT 11421high
EXCISION, BENIGN LESION INCLUDING MARGINS, EXCEPT SKIN TAG (UNLESS LISTED ELSEWHERE), SCALP, NECK, HANDS, FEET, GENITALIA; EXCISED DIAMETER 0.6 TO 1.0 CM
Source: CMS coverage guidance
CPT 11422high
EXCISION, BENIGN LESION INCLUDING MARGINS, EXCEPT SKIN TAG (UNLESS LISTED ELSEWHERE), SCALP, NECK, HANDS, FEET, GENITALIA; EXCISED DIAMETER 1.1 TO 2.0 CM
Source: CMS coverage guidance
CPT 11423high
EXCISION, BENIGN LESION INCLUDING MARGINS, EXCEPT SKIN TAG (UNLESS LISTED ELSEWHERE), SCALP, NECK, HANDS, FEET, GENITALIA; EXCISED DIAMETER 2.1 TO 3.0 CM
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 403541001high
Achromic naevus
Source: SNOMED International ICD-10 map
SNOMED_CT 15631861000119105high
Bilateral spider veins of lower limbs
Source: SNOMED International ICD-10 map
SNOMED_CT 403651008high
Corticosteroid-induced telangiectasia
Source: SNOMED International ICD-10 map
SNOMED_CT 1119371002high
Diffuse telangiectasia
Source: SNOMED International ICD-10 map
SNOMED_CT 1251415003high
Drug-induced telangiectasia
Source: SNOMED International ICD-10 map
SNOMED_CT 782823001high
Familial cutaneous telangiectasia and oropharyngeal cancer predisposition syndrome
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
I78.1
Common synonyms
Nevus, non-neoplastic
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.