2027 ICD-10-CM Diagnosis Code M77.32Calcaneal spur, left foot

ICD-10-CM Codes›M00–M99›M70-M79›M77

ICD-10-CM M77.32
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M77.32 is a billable ICD-10-CM diagnosis code for calcaneal spur, left foot. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified connective tissue disease.

Code Identity

ICD-10-CM Code
M77.32
Billable Status
Yes — Valid for Submission
Code Describes
Calcaneal spur, left foot
Short Description
Calcaneal spur, left foot
Same as the full description in the CMS dataset.
Parent Code
M77.3
Calcaneal spur

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM70-M79Other soft tissue disorders
CategoryM77Other enthesopathies
This CodeM77.32Calcaneal spur, left foot

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral bone spur of calcaneum
  • Bilateral exostosis of calcaneum
  • Bilateral exostosis of foot
  • Bilateral osteophyte of feet
  • Bone spur of left foot
  • Bone spur of right foot
  • Calcaneal spur
  • Calcaneal spur of left foot
  • Calcaneal spur of right foot
  • Exostosis of left calcaneus
  • Exostosis of left foot
  • Exostosis of right calcaneus
  • Exostosis of right foot
  • Fracture of calcaneal spur
  • Fracture of left calcaneal spur

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M77.32: its own notes plus those printed at M77 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From M77 Other enthesopathies applies to 20 codes

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.

From M77 Other enthesopathies applies to 20 codes
  • bursitis due to use, overuse and pressure (M70.-)
  • osteophyte (M25.7)
  • spinal enthesopathy (M46.0-)
From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • 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.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • 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 M77.32, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming M77.32: they are not reported together with it, unless the two conditions are unrelated.

  • M65.2 Calcific tendinitis
    tendinitis as classified in M75-M77 names M75-M77, which includes this code
  • M71 Other bursopathies
    enthesopathies (M76-M77) names M76-M77, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming M77.32: its condition is not part of those codes, and both may be reported when the patient has both.

  • M70 Soft tissue disorders related to use, overuse and pressure
    enthesopathies (M76-M77) names M76-M77, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS025
Other specified connective tissue disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Heel Spur

    a bony outgrowth on the lower surface of the calcaneus. though often presenting along with plantar fasciitis (fasciitis, plantar), they are not considered causally related.

Patient EducationClinical

Bone Diseases

Your bones help you move, give you shape and support your body. They are living tissues that rebuild constantly throughout your life. During childhood and your teens, your body adds new bone faster than it removes old bone. After about age 20, you can lose bone faster than you make bone.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert M77.32 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
726.73 Calcaneal spur
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M77.32Overview

What is the ICD-10 code for calcaneal spur, left foot?

The ICD-10-CM code for calcaneal spur, left foot is M77.32 (sometimes written as M7732). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is M77.32 (Calcaneal spur) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report calcaneal spur, left foot on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does M77.32 group to?

When calcaneal spur, left foot is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 566, 565, with relative weights from 0.7374 to 1.4909 depending on complications. Higher weights mean higher Medicare reimbursement.

Can M77.32 be reported with a code from M71.9?

Not as a rule. The Excludes1 note at M77, which applies to M77.32, lists "bursitis NOS (M71.9-)". 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 M77.32?

Under the General Equivalence Mappings, calcaneal spur, left foot converts to ICD-9-CM 726.73 (calcaneal spur). The mapping is approximate, so confirm the match fits the documentation.