ICD-10-CM · Chapter 2 · C00–D49
C43.121
Malignant melanoma of left upper eyelid, including canthus
Neoplasms
Quick facts
- Code
- C43.121
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 2 — Neoplasms
- Category
- C43 — Malignant melanoma of skin
- Specificity
- 6 characters
How coders use this code
ICD-10-CM C43.121 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of malignant melanoma of left upper eyelid, including canthus. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in C43
- C43Malignant melanoma of skin
- C43.0Malignant melanoma of lip
- C43.1Malignant melanoma of eyelid, including canthus
- C43.10Malignant melanoma of unspecified eyelid, including canthus
- C43.11Malignant melanoma of right eyelid, including canthus
- C43.111Malignant melanoma of right upper eyelid, including canthus
- C43.112Malignant melanoma of right lower eyelid, including canthus
- C43.12Malignant melanoma of left eyelid, including canthus
- C43.122Malignant melanoma of left lower eyelid, including canthus
- C43.2Malignant melanoma of ear and external auricular canal
- C43.20Malignant melanoma of unspecified ear and external auricular canal
- C43.21Malignant melanoma of right ear and external auricular canal
- C43.22Malignant melanoma of left ear and external auricular canal
- C43.3Malignant melanoma of other and unspecified parts of face
- C43.30Malignant melanoma of unspecified part of face
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