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D18.1

D18.1: Lymphangioma, any site

Billable / specific codeICD-10-CM

D18.1 is a billable, specific ICD-10-CM code for lymphangioma, any site. It is valid for submission on a claim.

Check D18.1 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above D18.1

Not part of this code, but both may be coded when both are present.

Written on D18: Hemangioma and lymphangioma, any site

  • benign neoplasm of glomus jugulare (D35.6)
  • blue or pigmented nevus (D22.-)
  • nevus NOS (D22.-)
  • vascular nevus (Q82.5)

Other codes that can never be billed with D18.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • D21Other benign neoplasms of connective and other soft tissue
  • D36.0Benign neoplasm of lymph nodes

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

D18.1 is named in 11 Medicare coverage policies: 11 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56421Billing and Coding: CT of the Abdomen and Pelvis
  • A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56632Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy

Alphabetic index entries that lead here

  • Hemolymphangioma
  • Hygroma(congenital) (cystic)
  • Lymphangioendothelioma
  • Lymphangioma
  • Lymphangiomyoma
  • Cyst›lymphangiomatous
  • Lymphangioma›capillary
  • Lymphangioma›cavernous
  • Lymphangioma›cystic
  • Nevus›lymphatic

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under D18

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.