2027 ICD-10-CM Diagnosis Code M76.40Tibial collateral bursitis [Pellegrini-Stieda], unspecified leg
ICD-10-CM Codes›M00–M99›M70-M79›M76
- Billable — Valid for Submission
- Not Chronic
M76.40 is a billable ICD-10-CM diagnosis code for tibial collateral bursitis [Pellegrini-Stieda], unspecified leg. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 557 through 558. Coders also document this condition as calcification of ligament. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified connective tissue disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Calcification of ligament
- Enthesopathy of knee
- Lesion of ligaments of knee region
- Pellegrini-Stieda syndrome
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M76.40: its own notes plus those printed at M76 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name M76.40, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming M76.40: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 2
These codes carry an Excludes2 note naming M76.40: its condition is not part of those codes, and both may be reported when the patient has both.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Enthesopathy
a disorder occurring at the site of insertion of tendons or ligaments into bones or joint capsules.
Patient EducationClinical
Bursitis
A bursa is a small, fluid-filled sac that acts as a cushion between a bone and other moving parts, such as muscles, tendons, or skin. Bursitis occurs when a bursa becomes inflamed. People get bursitis by overusing a joint. It can also be caused by an injury. It usually occurs at the knee or elbow.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M76.40 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M76.40Overview
What is the ICD-10 code for tibial collateral bursitis [Pellegrini-Stieda], unspecified leg?
The ICD-10-CM code for tibial collateral bursitis [Pellegrini-Stieda], unspecified leg is M76.40 (sometimes written as M7640). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M76.40 (Tibial collateral bursitis [Pellegrini-Stieda]) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report tibial collateral bursitis [Pellegrini-Stieda], unspecified leg on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M76.40 group to?
When tibial collateral bursitis [Pellegrini-Stieda], unspecified leg is the principal diagnosis on an inpatient stay, it groups to MS-DRG 557, 558, with relative weights from 0.8873 to 1.4883 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M76.40?
Under the General Equivalence Mappings, tibial collateral bursitis [Pellegrini-Stieda], unspecified leg converts to ICD-9-CM 726.62 (tibial coll lig bursitis). The mapping is approximate, so confirm the match fits the documentation.
