2026 ICD-10-CM Diagnosis Code M84.376DStress fracture, unspecified foot, subsequent encounter for fracture with routine healing

ICD-10-CM Codes›M00–M99›M80-M85›M84

ICD-10-CM M84.376D
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M84.376D is a billable ICD-10-CM diagnosis code for stress fracture, unspecified foot, subsequent encounter for fracture with routine healing. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 559 through 561. Coders also document this condition as fracture of navicular. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Stress fracture, subsequent encounter.

Code Identity

ICD-10-CM Code
M84.376D
Billable Status
Yes — Valid for Submission
Code Describes
Stress fracture, unspecified foot, subsequent encounter for fracture with routine healing
Short Description
Stress fracture, unsp foot, subs for fx w routn heal
Parent Code
M84.376
Stress fracture, unspecified foot

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM80-M85Disorders of bone density and structure
CategoryM84Disorder of continuity of bone
This CodeM84.376DStress fracture, unspecified foot, subsequent encounter for fracture with routine healing

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Fracture of navicular
  • March fracture of metatarsal bone
  • Stress fracture of calcaneus
  • Stress fracture of foot
  • Stress fracture of metatarsal bone
  • Stress fracture of navicular bone of foot
  • Stress fracture of tarsal bone

Clinical ClassificationClinical

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

CCSR MUS017
Stress fracture, subsequent encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Foot Injuries and Disorders

Each of your feet has 26 bones, 33 joints, and more than 100 tendons, muscles, and ligaments. No wonder a lot of things can go wrong. Here are a few common problems:

Read the full article at MedlinePlus

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

Convert M84.376D to ICD-9-CMHistory

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

ICD-9-CM
V54.26 Aftrcare path fx low leg
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M84.376DOverview

Is M84.376D (Stress fracture, unspecified foot) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report stress fracture, unspecified foot, subsequent encounter for fracture with routine healing on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character D in M84.376D mean?

The final character D marks a subsequent encounter: use it for routine care while the stress fracture, unspecified foot is healing, after active treatment has ended.

What MS-DRG does M84.376D group to?

When stress fracture, unspecified foot, subsequent encounter for fracture with routine healing is the principal diagnosis on an inpatient stay, it groups to MS-DRG 559, 560, 561, with relative weights from 0.8039 to 1.8649 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M84.376D?

Under the General Equivalence Mappings, stress fracture, unspecified foot, subsequent encounter for fracture with routine healing converts to ICD-9-CM V54.26 (aftrcare path fx low leg). 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.