2026 ICD-10-CM Diagnosis Code D23.4Other benign neoplasm of skin of scalp and neck

ICD-10-CM Codes›C00–D49›D10-D36›D23

ICD-10-CM D23.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D23.4 is a billable ICD-10-CM diagnosis code for other benign neoplasm of skin of scalp and neck. 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 Benign neoplasms.

Code Identity

ICD-10-CM Code
D23.4
Billable Status
Yes — Valid for Submission
Code Describes
Other benign neoplasm of skin of scalp and neck
Short Description
Other benign neoplasm of skin of scalp and neck
Same as the full description in the CMS dataset.
Parent Code
D23
Other benign neoplasms of skin

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD23Other benign neoplasms of skin
This CodeD23.4Other benign neoplasm of skin of scalp and neck

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign neoplasm of skin of head and neck
  • Benign neoplasm of skin of neck
  • Benign neoplasm of skin of scalp
  • Blue nevus of skin
  • Cellular blue nevus of skin
  • Dermatofibroma of neck
  • Dermatofibroma of scalp
  • Dermoid cyst of neck
  • Dermoid cyst of scalp
  • Dermoid cyst of skin
  • Dysplastic nevus of skin of scalp
  • Eccrine dermal cylindroma
  • Epidermal nevus of neck
  • Epidermal nevus of scalp
  • Giant cellular blue nevus of scalp
  • Melanocytic nevus of scalp
  • Papilloma of skin of scalp
  • Pilar tumor of scalp
  • Turban tumor

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

  • - Tumor - See Also: Neoplasm, unspecified behavior, by site;

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Tumor
      • turban
    • Turban tumor

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
scalpC44.40C79.2D04.4D23.4D48.5D49.2
skin NOS › cervical region [See Also: Neoplasm, skin, neck]C44.40C79.2D04.4D23.4D48.5D49.2
skin NOS › head NEC [See Also: Neoplasm, skin, scalp]C44.40C79.2D04.4D23.4D48.5D49.2
skin NOS › neckC44.40C79.2D04.4D23.4D48.5D49.2
skin NOS › scalpC44.40C79.2D04.4D23.4D48.5D49.2
skin NOS › supraclavicular region [See Also: Neoplasm, skin, neck]C44.40C79.2D04.4D23.4D48.5D49.2

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert D23.4 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
216.4 Ben neo scalp/skin neck
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D23.4Overview

Is D23.4 (Other benign neoplasms of skin) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other benign neoplasm of skin of scalp and neck on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D23.4 group to?

When other benign neoplasm of skin of scalp and neck 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 D23.4?

Under the General Equivalence Mappings, other benign neoplasm of skin of scalp and neck converts to ICD-9-CM 216.4 (ben neo scalp/skin neck). The mapping is approximate, so confirm the match fits the documentation.

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.