2026 ICD-10-CM Diagnosis Code I78.1Nevus, non-neoplastic
ICD-10-CM Codes›I00–I99›I70-I79›I78
- Billable — Valid for Submission
- Not Chronic
I78.1 is a billable ICD-10-CM diagnosis code for nevus, non-neoplastic. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified circulatory disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acquired telangiectasia of small and large intestines
- Ankle flare
- Bilateral spider veins of lower limbs
- Capillary hemangioma
- Compound nevus of skin
- Corticosteroid-induced telangiectasia
- Cutaneous complication of systemic sclerosis
- Dermal cellular nevus
- Drug-induced telangiectasia
- Epidermal nevus
- Generalized essential telangiectasia
- Livedo telangiectatica
- Lupus erythematosus-associated nailfold telangiectasia
- Non-neoplastic nevus
- Photodistributed telangiectasia
- Primary idiopathic cutaneous telangiectasia
- Progressive ascending arborizing telangiectasia
- Scleroderma-associated nailfold telangiectasia
- Scleroderma-associated telangiectasia
- Secondary telangiectasia
- Senile angioma
- Senile nevus
- Solar telangiectasia
- Spider nevus
- Spider telangiectasis in association with liver disease
- Spider telangiectasis in association with pregnancy
- Spider telangiectasis of skin
- Spider telangiectasis, secondary
- Spider vein of left lower limb
- Spider vein of right lower limb
- Strawberry nevus of skin
- Telangiectasia disorder
- Telangiectasia due to prolonged vasodilatation
- Telangiectasia due to venous hypertension
- Telangiectasia following surgery
- Telangiectasia of limb
- Telangiectasia of nailfolds
- Telangiectasia of skin
- Telangiectasia of skin of face
- Telangiectasia of urinary bladder
- Telangiectasias of lid margin
- Telangiectasis of vocal cord following radiotherapy
- Telangiectasis of vocal fold
- TEMPI syndrome
- Unilateral nevoid telangiectasia
- Vascular disorder of large intestine
- Venous telangiectases of the lower limb
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Araneus nevus
- Senile nevus
- Spider nevus
- Stellar nevus
Type 1 Excludes
Type 2 Excludes
- 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
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Angioma - See Also: Hemangioma, by site;
- De Morgan's spots (senile angiomas) - I78.1
- Hemangioma - D18.00
- capillary - I78.1
- araneus - I78.1
- non-neoplastic - I78.1
- senile - I78.1
- spider - I78.1
- stellar - I78.1
- Cayenne pepper - I78.1
- de Morgan's (senile angiomas) - I78.1
- ruby - I78.1
- Telangiectasia, telangiectasis (verrucous) - I78.1
- spider - I78.1
- papillary - I78.1
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Angioma
- capillary
- Angioma
- senile
- Angioma
- spider
- Angioma
- stellate
- De Morgan's spots(senile angiomas)
- Hemangioma
- capillary
- Nevus
- araneus
- Nevus
- non-neoplastic
- Nevus
- senile
- Nevus
- spider
- Nevus
- stellar
- Spider
- nevus
- Spider
- vascular
- Spots, spotting(in) (of)
- Cayenne pepper
- Spots, spotting(in) (of)
- de Morgan's (senile angiomas)
- Spots, spotting(in) (of)
- ruby
- Telangiectasia, telangiectasis(verrucous)
- Telangiectasia, telangiectasis(verrucous)
- spider
- Varix(lower limb)
- papillary
- Vascular
- spider
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Senile Nevus
a benign skin lesion consisting of a cluster of capillaries at the surface of the skin, forming a red papular lesion.Becker Nevus|Becker's Nevus|Linear Papular Ectodermal-Mesodermal Hamartoma|Melanosis Neviformis|Pigmented Hairy Epidermal Nevus|Pigmented Hairy Nevus of Becker|Progressive Cribriform and Zosteriform Hyperpigmentation
a benign lesion that is sometimes congenital and consists of an overgrowth of the epidermis and the presence of melanin-containing cells. it is found mostly in males and typically develops during childhood or adolescence, becoming darker and more hairy after puberty.Epidermal Nevus
a benign, pigmented skin growth caused by an overgrowth of the epidermis. it is typically seen at birth, but can develop in early childhood or later in life. most cases are sporadic, but familial patterns of inheritance have been observed.Junctional Nevus|Intraepidermal Nevus|Intraepidermal Nevus of Skin|Intraepidermal Nevus of the Skin|Intraepidermal nevus|Junction Nevus|Junction nevus|Junctional Melanocytic Nevus|Junctional Melanocytoma|Junctional Nevus of Skin|Junctional Nevus of the Skin|Junctional Skin Nevus|Junctional nevus, NOS|junctional nevus
a nevus characterized by the presence of an intraepidermal proliferation of nevus cells. the nevus cells form multiple nests in the dermal-epidermal junction. it presents as a small, slightly raised, pigmented skin lesion.Verrucous Nevus|Verrucous Epidermal Nevus
a benign wart-like, pigmented skin lesion appearing on various parts of the body at birth or early in childhood, usually in linear groupings.TEMPI Syndrome
a rare syndrome characterized by telangiectasias, elevated erythropoietin level and erythrocytosis, monoclonal gammopathy, perinephric fluid collections, and intrapulmonary shunting. it is best classified as a type of plasma cell dyscrasia with paraneoplastic manifestations.Junctional Nevus|Intraepidermal Nevus|Intraepidermal Nevus of Skin|Intraepidermal Nevus of the Skin|Intraepidermal nevus|Junction Nevus|Junction nevus|Junctional Melanocytic Nevus|Junctional Nevus of Skin|Junctional Nevus of the Skin|Junctional Skin Nevus|Junctional nevus, NOS|junctional nevus
a nevus characterized by the presence of an intraepidermal proliferation of nevus cells. the nevus cells form multiple nests in the dermal-epidermal junction. it presents as a small, slightly raised, pigmented skin lesion.Cutaneous Junctional Nevus|Intraepidermal Nevus|Intraepidermal Nevus of Skin|Intraepidermal Nevus of the Skin|Intraepidermal nevus|Junctional Nevus of Skin|Junctional Nevus of the Skin|Junctional Skin Nevus|Skin Junction Nevus|Skin Junctional Melanocytic Nevus|Skin Junctional Nevus|junctional nevus
a cutaneous nevus characterized by the presence of an intraepidermal proliferation of nevus cells. the nevus cells form multiple nests in the dermal-epidermal junction. it presents as a small, slightly raised, pigmented skin lesion.
Patient EducationClinical
Birthmarks
Birthmarks are abnormalities of the skin that are present when a baby is born. There are two types of birthmarks. Vascular birthmarks are made up of blood vessels that haven't formed correctly. They are usually red. Two types of vascular birthmarks are hemangiomas and port-wine stains.
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Convert I78.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I78.1Overview
Is I78.1 (Diseases of capillaries) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report nevus, non-neoplastic on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does I78.1 group to?
When nevus, non-neoplastic is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of I78.1?
Under the General Equivalence Mappings, nevus, non-neoplastic converts to ICD-9-CM 448.1 (nevus, non-neoplastic). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
