C43.5 Malignant melanoma of trunk

⚠ Non-Billable ICD-10-CM 2026
Open C43.5 in Web App →

The ICD-10-CM code for Malignant melanoma of trunk is C43.5 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
C43-C44: Melanoma and other malignant neoplasms of skin (C43-C44)
Category C43
33 codes (24 billable)
FY2026 Status
Stable since FY2024
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • malignant neoplasm of anus NOS (C21.0)
  • malignant neoplasm of scrotum (C63.2)

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.a
Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

C43 Malignant melanoma of skin

More Specific Codes

C43.51 Malignant melanoma of anal skin C43.52 Malignant melanoma of skin of breast C43.59 Malignant melanoma of other part of trunk

Related Codes in C43

C43 Malignant melanoma of skin 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 C43.51 Malignant melanoma of anal skin
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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