2026 ICD-10-CM Diagnosis Code C44.311Basal cell carcinoma of skin of nose
ICD-10-CM Codes›C00–D49›C43-C44›C44
- Billable — Valid for Submission
- Not Chronic
C44.311 is a billable ICD-10-CM diagnosis code for basal cell carcinoma of skin of nose. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. 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 ala nasi
- Basal cell carcinoma of dorsum of nose
- Basal cell carcinoma of lateral side wall of nose
- Basal cell carcinoma of naris
- Basal cell carcinoma of nasal columella
- Basal cell carcinoma of nasolabial groove
- Basal cell carcinoma of nose
- Basal cell carcinoma of root of nose
- Basal cell carcinoma of supratip of nose
- Basal cell carcinoma of tip of nose
- Carcinoma of nasal septum
- Carcinoma of tip of nose
- Malignant neoplasm of nasal septum
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. |
|---|---|---|---|---|---|---|
| nose, nasal › skin › basal cell carcinoma | C44.311 | – | – | – | – | – |
Patient EducationClinical
Skin Cancer
Skin cancer is the most common form of cancer in the United States. The two most common types are basal cell cancer and squamous cell cancer. They usually form on the head, face, neck, hands, and arms. Another type of skin cancer, melanoma, is more dangerous but less common.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert C44.311 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About C44.311Overview
Is C44.311 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report basal cell carcinoma of skin of nose on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does C44.311 group to?
When basal cell carcinoma of skin of nose is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of C44.311?
Under the General Equivalence Mappings, basal cell carcinoma of skin of nose converts to ICD-9-CM 173.31 (bsl cel skn face NEC/NOS). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
