2024 ICD-10-CM Diagnosis Code D22.9

Melanocytic nevi, unspecified

ICD-10-CM Code:
ICD-10 Code for:
Melanocytic nevi, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Neoplasms
    • Benign neoplasms, except benign neuroendocrine tumors
      • Melanocytic nevi

D22.9 is a billable diagnosis code used to specify a medical diagnosis of melanocytic nevi, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like D22.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acquired melanocytic nevus
  • Acral nevus
  • Balloon cell nevus of skin
  • B-K mole syndrome
  • CLOVE syndrome
  • Cockade nevus
  • Combined melanocytic nevus
  • Compound nevus of skin
  • Compound nevus of skin
  • Congenital absence of skin on scalp with epidermal nevi
  • Congenital benign giant pigmented nevus of skin
  • Congenital intermediate sized melanocytic nevus
  • Congenital pigmented melanocytic nevus of skin
  • Congenital small melanocytic nevus
  • Deep penetrating melanocytic nevus
  • Dermal cellular nevus
  • Dermal cellular nevus
  • Dermal melanocytic hamartoma
  • Desmoplastic spindle and epithelioid cell melanocytic nevus of skin
  • Dysplastic nevus of skin
  • Epithelioid and spindle cell nevus
  • Eruptive melanocytic nevi
  • Hereditary disorder of lymphatic system
  • Inflammatory epidermal nevus
  • Inflammatory linear verrucous epidermal nevus
  • Irritated melanocytic nevus of skin
  • Junctional melanocytic nevus of skin
  • Large congenital pigmented melanocytic nevus of skin
  • Melanocytic nevus
  • Melanocytic nevus of skin
  • Melanocytic nevus of tongue
  • Multiple atypical melanocytic nevi
  • Multiple benign melanocytic nevi
  • Myerson's nevus
  • Neurocutaneous melanosis
  • Nevoid lentiginosis
  • Nevus spilus
  • Persistent melanocytic nevus
  • Pigmented hairy epidermal nevus
  • Progeroid short stature with pigmented nevi
  • PTEN hamartoma tumor syndrome
  • Recurrent melanocytic nevus
  • Segmental outgrowth, lipomatosis, arteriovenous malformation, epidermal nevus syndrome
  • Spindle cell nevus
  • Spindle cell nevus of Reed
  • Verrucous compound melanocytic nevus

Clinical Classification

Clinical Information

  • Childhood Pigmented Spindle Cell Nevus|Pediatric Pigmented Spindle Cell Nevus

    a pigmented spindle cell nevus that occurs during childhood.
  • Pigmented Spindle Cell Nevus|PSCN|Pigmented Spindle Cell Nevus of Reed|Pigmented Spindle Cell Variant of Spitz Nevus|Pigmented spindle cell nevus of Reed|Reed Nevus|Spindle Cell Nevus of Reed

    a benign, small and slightly elevated brown or black skin lesion with usually well-demarcated borders. it is characterized by the presence of a melanocytic proliferation resulting in the formation of uniform cellular nests. sometimes the clinical and morphologic features may be difficult to distinguish from melanoma.
  • Spindle Cell Nevus

    a nevus characterized by the presence of spindle-shaped melanocytes.
  • Spitz Nevus|Benign Juvenile Melanoma|Epithelioid and spindle cell nevus|Juvenile Nevus|Juvenile nevus|Spindle and/ or Epithelioid Cell Nevus|Spindle cell nevus, NOS|Spitz nevus

    a benign, acquired or congenital, usually single skin lesion. it can occur on any area of the body, but most commonly occurs on the face of children and the thighs of young females. it is characterized by a proliferation of large spindle, oval, or large epithelioid melanocytes in the dermal-epidermal junction. the melanocytic proliferation subsequently extends into the dermis.
  • Cockade Nevus

    a rare speckled nevus with concentric pattern of pigmentation and central papule surrounded by clear zone.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert D22.9 to ICD-9-CM

  • ICD-9-CM Code: 216.8 - Benign neoplasm skin NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
  • ICD-9-CM Code: 216.9 - Benign neoplasm skin NOS
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


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. Pigmented birthmarks are made of a cluster of pigment cells which cause color in skin. They can be many different colors, from tan to brown, gray to black, or even blue. Moles can be birthmarks.

No one knows what causes many types of birthmarks, but some run in families. Your baby's doctor will look at the birthmark to see if it needs any treatment or if it should be watched. Pigmented birthmarks aren't usually treated, except for moles. Treatment for vascular birthmarks includes laser surgery.

Most birthmarks are not serious, and some go away on their own. Some stay the same or get worse as you get older. Usually birthmarks are only a concern for your appearance. But certain types can increase your risk of skin cancer. If your birthmark bleeds, hurts, itches, or becomes infected, call your health care provider.

[Learn More in MedlinePlus]


Moles are growths on the skin. They happen when pigment cells in the skin, called melanocytes, grow in clusters. Moles are very common. Most people have between 10 and 40 moles. A person may develop new moles from time to time, usually until about age 40. In older people, they tend to fade away.

Moles are usually pink, tan or brown. They can be flat or raised. They are usually round or oval and no larger than a pencil eraser.

About one out of every ten people has at least one unusual (or atypical) mole that looks different from an ordinary mole. They are called dysplastic nevi. They may be more likely than ordinary moles to develop into melanoma, a type of skin cancer. You should have a health care professional check your moles if they look unusual, grow larger, change in color or outline, or in any other way.

NIH: National Cancer Institute

[Learn More in MedlinePlus]

Common Moles, Dysplastic Nevi, and Risk of Melanoma

Learn about moles and how some moles may be related to melanoma, the most serious type of skin cancer. See photos of differences between moles and cancer.
[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[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.