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ICD-10-CM 2027 diagnosis code

D03.10Melanoma in situ of unspecified eyelid, including canthus

✓ Billable / specific

D03.10 is a valid, billable ICD-10-CM code for melanoma in situ of unspecified eyelid, including canthus. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 D03.10

D03.10 is the ICD-10-CM diagnosis code for melanoma in situ of unspecified eyelid, including canthus. It belongs to category D03 (melanoma in situ), block D00-D09 (in situ neoplasms) 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 D03.1, choose D03.10 (unspecified eyelid, including canthus) only when documentation doesn't support a more specific option: right eyelid, including canthus (D03.11) and left eyelid, including canthus (D03.12).

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 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), 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 172.1 (malignant melanoma of skin of eyelid, including canthus).

Notes that apply from higher levels

Instructions written at a parent level also apply to D03.10.

Broader instructions also apply from D00-D09 In situ neoplasms and 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.

ICD-9-CM equivalent

Converter →
  • 172.1Malignant melanoma of skin of eyelid, including canthusapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about D03.10

Is D03.10 billable?

Yes. D03.10 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can D03.10 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict D03.10 as a principal diagnosis.

Is D03.10 a CC or MCC?

No. D03.10 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does D03.10 group to?

D03.10 is used in the MS-DRG v44.0 logic for MS-DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent) and MS-DRG 125 (Other Disorders of the Eye 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 D03.10?

The CMS General Equivalence Mappings map D03.10 to ICD-9-CM 172.1.