I78.1 — Nevus, non-neoplastic
I78.1 is a billable, specific ICD-10-CM code for nevus, non-neoplastic. It is valid for submission on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Araneus nevus
- Senile nevus
- Spider nevus
- Stellar nevus
Risk adjustment
I78.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
I78.1 is named in 6 Medicare coverage policies — 3 listing it as supporting medical necessity, and 3 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52870Billing and Coding: Treatment of Varicose Veins of the Lower Extremitynot covered
- A57305Billing and Coding: Varicose Veins of the Lower Extremity, Treatment ofnot covered
- A57706Billing and Coding: Treatment of Varicose Veins of the Lower Extremitiesnot covered
- A56346Billing and Coding: Removal of Benign and Malignant Skin Lesions
How I78.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I78.1.
- De Morgan's spots(senile angiomas)
- Telangiectasia, telangiectasis(verrucous)
- Angioma›capillary
- Angioma›senile
- Angioma›spider
- Angioma›stellate
- Hemangioma›capillary
- Nevus›araneus
- Nevus›non-neoplastic
- Nevus›senile
- Nevus›spider
- Nevus›stellar
Related codes at this level
Codes that share I78. If I78.1 is not quite right, the correct code is usually one of these.
Questions about I78.1
- Is I78.1 a billable ICD-10-CM code?
- Yes. I78.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I78.1 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).
- What cannot be coded together with I78.1?
- I78.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.