2027 ICD-10-CM Diagnosis Code C44.111Basal cell carcinoma of skin of unspecified eyelid, including canthus
ICD-10-CM Codes›C00–D49›C43-C44›C44
- Billable — Valid for Submission
- Not Chronic
C44.111 is a billable ICD-10-CM diagnosis code for basal cell carcinoma of skin of unspecified eyelid, including canthus. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. Coders also document this condition as basal cell carcinoma of eyelid. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Skin cancers - basal cell carcinoma.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Basal cell carcinoma of eyelid
- Basal cell carcinoma of lateral canthus
- Basal cell carcinoma of lower eyelid
- Basal cell carcinoma of medial canthus
- Basal cell carcinoma of upper eyelid
- Malignant neoplasm of canthus
- Outer canthus finding
- Primary basal cell carcinoma of left eyelid
- Primary basal cell carcinoma of right eyelid
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to C44.111: its own notes plus those printed at C44.1, C44, and Chapter 2. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- malignant neoplasm of sebaceous glands
- malignant neoplasm of sweat glands
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Notes
General instructions on how these codes are used.
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name C44.111, its category, or a range that includes it.
Applicable To 1
These notes mention C44.111.
Excludes1 2
These codes carry an Excludes1 note naming C44.111: they are not reported together with it, unless the two conditions are unrelated.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| canthus (eye) (inner) (outer) › basal cell carcinoma | C44.11 | – | – | – | – | – |
| eyelid (lower) (skin) (upper) › basal cell carcinoma | C44.11 | – | – | – | – | – |
| lid (lower) (upper) › basal cell carcinoma | C44.11 | – | – | – | – | – |
| meibomian gland › basal cell carcinoma | C44.11 | – | – | – | – | – |
| palpebra › basal cell carcinoma | C44.11 | – | – | – | – | – |
| skin NOS › canthus (eye) (inner) (outer) › basal cell carcinoma | C44.11 | – | – | – | – | – |
| skin NOS › eyelid › basal cell carcinoma | C44.11 | – | – | – | – | – |
| skin NOS › lid (lower) (upper) › basal cell carcinoma | C44.11 | – | – | – | – | – |
| skin NOS › palpebra › basal cell carcinoma | C44.11 | – | – | – | – | – |
Patient EducationClinical
Eyelid Disorders
Eyelid disorders include a variety of conditions that affect your eyelids. Your eyelids protect your eyes and help keep them healthy. When you blink, they spread tears across your eyes and help wash away dirt or dust. You also close your eyelids when something comes near your eyes to protect them from injury.
The full article covers:
- What are eyelid disorders?
- What causes eyelid disorders?
- What are common eyelid disorders?
- What are the symptoms of eyelid disorders?
- How are eyelid disorders diagnosed?
- How are eyelid disorders treated?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert C44.111 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About C44.111Overview
What is the ICD-10 code for basal cell carcinoma of skin of unspecified eyelid, including canthus?
The ICD-10-CM code for basal cell carcinoma of skin of unspecified eyelid, including canthus is C44.111 (sometimes written as C44111). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is C44.111 (Basal cell carcinoma of skin of eyelid, including canthus) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report basal cell carcinoma of skin of unspecified eyelid, including canthus on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does C44.111 group to?
When basal cell carcinoma of skin of unspecified eyelid, including canthus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.
Can C44.111 be reported with C49.0?
Not as a rule. The Excludes1 note at C44.1, which applies to C44.111, lists "connective tissue of eyelid (C49.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of C44.111?
Under the General Equivalence Mappings, basal cell carcinoma of skin of unspecified eyelid, including canthus converts to ICD-9-CM 173.11 (basal cell ca lid/canth). The mapping is approximate, so confirm the match fits the documentation.
