ICD-10-CM 2027 diagnosis code
C43.60Malignant melanoma of unspecified upper limb, including shoulder
C43.60 is a valid, billable ICD-10-CM code for malignant melanoma of unspecified upper limb, including shoulder. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Malignant melanoma of unsp upper limb, including shoulder
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About C43.60
C43.60 is the ICD-10-CM diagnosis code for malignant melanoma of unspecified upper limb, including shoulder. It belongs to category C43 (malignant melanoma of skin), block C43-C44 (melanoma and other malignant neoplasms of skin) and chapter 2 (neoplasms). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within C43.6, choose C43.60 (unspecified upper limb, including shoulder) only when documentation doesn't support a more specific option: right upper limb, including shoulder (C43.61) and left upper limb, including shoulder (C43.62).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 595 (Major Skin Disorders with MCC, relative weight 2.0239) and DRG 596 (Major Skin Disorders without MCC, relative weight 1.1071), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 172.6 (malignant melanoma of skin of upper limb, including shoulder).
Notes that apply from higher levels
Instructions written at a parent level also apply to C43.60.
Broader instructions also apply from Chapter 2: Neoplasms.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 09 · Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast
ICD-9-CM equivalent
Converter →- 172.6Malignant melanoma of skin of upper limb, including shoulderapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about C43.60
Is C43.60 billable?
- Yes. C43.60 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can C43.60 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict C43.60 as a principal diagnosis.
Is C43.60 a CC or MCC?
- No. C43.60 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does C43.60 group to?
- C43.60 is used in the MS-DRG v44.0 logic for MS-DRG 595 (Major Skin Disorders with MCC) and MS-DRG 596 (Major Skin Disorders without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for C43.60?
- The CMS General Equivalence Mappings map C43.60 to ICD-9-CM 172.6.