2026 ICD-10-CM Diagnosis Code C76.51Malignant neoplasm of right lower limb
ICD-10-CM Codes›C00–D49›C76-C80›C76
- Billable — Valid for Submission
- Chronic Condition
C76.51 is a billable ICD-10-CM diagnosis code for malignant neoplasm of right lower limb. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 826 through 830, 843 through 845. Coders also document this condition as primary malignant neoplasm of right lower limb. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cancer of other sites.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Primary malignant neoplasm of right lower limb
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. |
|---|---|---|---|---|---|---|
| ankle NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| calf | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| extremity › lower | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| foot NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| heel NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| hip NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| knee NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| leg NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| limb › lower | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| popliteal fossa or space | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| thigh NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
| toe NEC | C76.5 | C79.89 | D04.7 | D36.7 | D48.7 | D49.89 |
Patient EducationClinical
Cancer
Cancer is not just one disease but many diseases. Cancer begins in your cells, which are the building blocks of your body. Usually, your body forms new cells as needed, replacing old cells that die. Sometimes this process goes wrong. New cells grow even when you don't need them, and old cells don't die when they should.
The full article covers:
- What is cancer?
- What are the types of cancer?
- How does cancer develop?
- What are the symptoms of cancer?
- How is cancer diagnosed?
- What are the treatments for cancer?
- Can cancer be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert C76.51 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About C76.51Overview
Is C76.51 (Malignant neoplasm of lower limb) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report malignant neoplasm of right lower limb on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does C76.51 group to?
When malignant neoplasm of right lower limb is the principal diagnosis on an inpatient stay, it groups to MS-DRG 826, 827, 828, 829, 830, 843, 844, 845, with relative weights from 0.8516 to 4.6778 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of C76.51?
Under the General Equivalence Mappings, malignant neoplasm of right lower limb converts to ICD-9-CM 195.5 (malign neopl leg). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
