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ICD-10-CM 2027 diagnosis code

C44.129Squamous cell carcinoma of skin of left eyelid, including canthus

Not billable — use a more specific code

C44.129 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.Short description: Squamous cell carcinoma skin/ left eyelid, including canthus

Code last changed in FY2019 (effective October 1, 2018). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About C44.129

C44.129 is the ICD-10-CM diagnosis code for squamous cell carcinoma of skin of left eyelid, including canthus. It belongs to category C44 (other and unspecified malignant neoplasm of skin), block C43-C44 (melanoma and other malignant neoplasms of skin) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within C44.12 (squamous cell carcinoma of skin of eyelid, including canthus), C44.129 is specifically for squamous cell carcinoma of skin of left eyelid, including canthus. Related codes cover unspecified eyelid, including canthus (C44.121) and right eyelid, including canthus (C44.122).

To report this condition, pick the subcode that matches the documentation: C44.1291 (canthus) and C44.1292 (canthus).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2019 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 173.12 (squamous cell carcinoma of eyelid, including canthus).

Specific codes under C44.129

Notes that apply from higher levels

Instructions written at a parent level also apply to C44.129.

› From C44.1 Other and unspecified malignant neoplasm of skin of eyelid, including canthus
Excludes1
  • connective tissue of eyelid (C49.0)
› From C44 Other and unspecified malignant neoplasm of skin
Includes
  • malignant neoplasm of sebaceous glands
  • malignant neoplasm of sweat glands
Excludes1
  • Kaposi's sarcoma of skin (C46.0)
  • malignant melanoma of skin (C43.-)
  • malignant neoplasm of skin of genital organs (C51-C52, C60.-, C63.2)
  • Merkel cell carcinoma (C4A.-)

Broader instructions also apply from Chapter 2: Neoplasms.

ICD-9-CM equivalent

Converter →
  • 173.12Squamous cell carcinoma 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)
  • FY2019 (effective 10/1/2018): Expanded — no longer billable

Common questions about C44.129

Is C44.129 billable?

No. C44.129 is a header code. Report one of its more specific subcodes instead.

What is the ICD-9 code for C44.129?

The CMS General Equivalence Mappings map C44.129 to ICD-9-CM 173.12.