ICD-10-CM C43: Malignant melanoma of skin

ICD-10-CM Diagnosis Code (2025)

Official Description for C43

Malignant melanoma of skin

Coding Notes & Guidelines for C43

Excludes1: Not Coded Here

melanoma in situ (D03.-)

Excludes1: Not Coded Here

malignant neoplasm of vermilion border of lip (C00.0-C00.2)

Excludes2: Not Included Here
  • malignant melanoma of skin of genital organs (C51-C52, C60.-, C63.-)
  • Merkel cell carcinoma (C4A.-)
  • sites other than skin-code to malignant neoplasm of the site
Excludes2: Not Included Here
  • malignant neoplasm of anus NOS (C21.0)
  • malignant neoplasm of scrotum (C63.2)
Inclusion Terms
  • Malignant melanoma of anal margin
  • Malignant melanoma of perianal skin
Inclusion Terms
  • Malignant melanoma of unspecified site of skin
  • Melanoma (malignant) NOS

Child Codes (More Specific Codes for C43):

C43.0 - Malignant melanoma of lip C43.1 - Malignant melanoma of eyelid, including canthus C43.10 - Malignant melanoma of unspecified eyelid, including canthus C43.11 - Malignant melanoma of right eyelid, including canthus C43.111 - Malignant melanoma of right upper eyelid, including canthus C43.112 - Malignant melanoma of right lower eyelid, including canthus C43.12 - Malignant melanoma of left eyelid, including canthus C43.121 - Malignant melanoma of left upper eyelid, including canthus C43.122 - Malignant melanoma of left lower eyelid, including canthus C43.2 - Malignant melanoma of ear and external auricular canal C43.20 - Malignant melanoma of unspecified ear and external auricular canal C43.21 - Malignant melanoma of right ear and external auricular canal C43.22 - Malignant melanoma of left ear and external auricular canal C43.3 - Malignant melanoma of other and unspecified parts of face C43.30 - Malignant melanoma of unspecified part of face C43.31 - Malignant melanoma of nose C43.39 - Malignant melanoma of other parts of face C43.4 - Malignant melanoma of scalp and neck C43.5 - Malignant melanoma of trunk C43.51 - Malignant melanoma of anal skin C43.52 - Malignant melanoma of skin of breast C43.59 - Malignant melanoma of other part of trunk C43.6 - Malignant melanoma of upper limb, including shoulder C43.60 - Malignant melanoma of unspecified upper limb, including shoulder C43.61 - Malignant melanoma of right upper limb, including shoulder C43.62 - Malignant melanoma of left upper limb, including shoulder C43.7 - Malignant melanoma of lower limb, including hip C43.70 - Malignant melanoma of unspecified lower limb, including hip C43.71 - Malignant melanoma of right lower limb, including hip C43.72 - Malignant melanoma of left lower limb, including hip C43.8 - Malignant melanoma of overlapping sites of skin C43.9 - Malignant melanoma of skin, unspecified

About ICD-10-CM Code C43 (Malignant melanoma of skin)

ICD-10-CM code C43 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM C43 became effective on October 1, 2024.

This page provides detailed information about C43 - Malignant melanoma of skin. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Malignant melanoma of skin.