2026 ICD-10-CM Diagnosis Code M72.4Pseudosarcomatous fibromatosis

ICD-10-CM Codes›M00–M99›M70-M79›M72

ICD-10-CM M72.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M72.4 is a billable ICD-10-CM diagnosis code for pseudosarcomatous fibromatosis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 557 through 558. Coders also document this condition as fibrositis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified connective tissue disease.

Code Identity

ICD-10-CM Code
M72.4
Billable Status
Yes — Valid for Submission
Code Describes
Pseudosarcomatous fibromatosis
Short Description
Pseudosarcomatous fibromatosis
Same as the full description in the CMS dataset.
Parent Code
M72
Fibroblastic disorders

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM70-M79Other soft tissue disorders
CategoryM72Fibroblastic disorders
This CodeM72.4Pseudosarcomatous fibromatosis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Fibrositis
  • Fibrositis and nodular fasciitis
  • Intradermal nodular fasciitis
  • Nodular fasciitis
  • Parosteal nodular fasciitis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Nodular fasciitis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Fasciitis
      • nodular
    • Fibromatosis
      • pseudosarcomatous (proliferative) (subcutaneous)

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

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

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

Convert M72.4 to ICD-9-CMHistory

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

ICD-9-CM
728.79 Fibromatoses NEC
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 M72.4Overview

Is M72.4 (Fibroblastic disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report pseudosarcomatous fibromatosis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M72.4 group to?

When pseudosarcomatous fibromatosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 557, 558, with relative weights from 0.8932 to 1.4869 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M72.4?

Under the General Equivalence Mappings, pseudosarcomatous fibromatosis converts to ICD-9-CM 728.79 (fibromatoses NEC). 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.