ICD-10-CM › C00-D49 › C43-C44 › C43 Malignant melanoma of skin › C43.9
Malignant melanoma of skin, unspecified
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Malignant melanoma of skin, unspecified
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from C43 Malignant melanoma of skin
Excludes1 - never coded here
- melanoma in situ (D03.-)
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
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Melanosarcoma
- Nevocarcinoma
- Melanoblastoma
- Melanocarcinoma
- Mole > cancerous
- Melanoepithelioma
- Nevus > malignant
- Melanoma > nodular
- Sarcoma > melanotic
- Melanoma > amelanotic
- Melanoma > balloon cell
- Nevus > blue > malignant
- Melanoma > epithelioid cell
- Lentigo > maligna > melanoma
- Freckle > malignant melanoma in
- Melanoma > in > junctional nevus
- Melanoma > regressing, malignant
- Melanoma > superficial spreading
- Melanosarcoma > epithelioid cell
- Melanoma > neurotropic, malignant
- Melanoma > desmoplastic, malignant
- Melanoma > in > giant pigmented nevus
- Mole > malignant > meaning > melanoma
- Melanoma > in > precancerous melanosis
- Melanoma > acral lentiginous, malignant
- Melanoma > in > Hutchinson's melanotic freckle
- Melanosis > precancerous > malignant melanoma in
- Melanoma > spindle cell > with epithelioid, mixed
- Nevus > pigmented > giant > malignant melanoma in
- Melanoma > epithelioid cell > with spindle cell, mixed
- Hutchinson's > melanotic freckle > malignant melanoma in
- Melanoma
- Melanoma > skin
- Melanoma > skin > skin NEC
Codes in the same group
| Code | Description | Status |
|---|---|---|
| C43.0 | Malignant melanoma of lip | Valid |
| C43.1 | Malignant melanoma of eyelid, including canthus | Not billable |
| C43.2 | Malignant melanoma of ear and external auricular canal | Not billable |
| C43.3 | Malignant melanoma of other and unspecified parts of face | Not billable |
| C43.4 | Malignant melanoma of scalp and neck | Valid |
| C43.5 | Malignant melanoma of trunk | Not billable |
| C43.6 | Malignant melanoma of upper limb, including shoulder | Not billable |
| C43.7 | Malignant melanoma of lower limb, including hip | Not billable |
| C43.8 | Malignant melanoma of overlapping sites of skin | Valid |