2026 ICD-10-CM Diagnosis Code M35.3Polymyalgia rheumatica

ICD-10-CM Codes›M00–M99›M30-M36›M35

ICD-10-CM M35.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M35.3 is a billable ICD-10-CM diagnosis code for polymyalgia rheumatica. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 545 through 547. Coders also document this condition as polymyalgia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Systemic lupus erythematosus and connective tissue disorders.

Code Identity

ICD-10-CM Code
M35.3
Billable Status
Yes — Valid for Submission
Code Describes
Polymyalgia rheumatica
Short Description
Polymyalgia rheumatica
Same as the full description in the CMS dataset.
Parent Code
M35
Other systemic involvement of connective tissue

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM30-M36Systemic connective tissue disorders
CategoryM35Other systemic involvement of connective tissue
This CodeM35.3Polymyalgia rheumatica

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Polymyalgia
  • Polymyalgia rheumatica

Tabular List NotesGuidance

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

Type 1 Excludes

  • polymyalgia rheumatica with giant cell arteritis M31.5

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.

    • Disease, diseased
      • Forestier's (rhizomelic pseudopolyarthritis)
    • Forestier's disease(rhizomelic pseudopolyarthritis)
    • Polymyalgia
    • Polymyalgia
      • rheumatica
    • Pseudopolyarthritis, rhizomelic

Clinical ClassificationClinical

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

CCSR MUS024
Systemic lupus erythematosus and connective tissue disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Polymyalgia Rheumatica

    a syndrome in the elderly characterized by proximal joint and muscle pain, high erythrocyte sedimentation rate, and a self-limiting course. pain is usually accompanied by evidence of an inflammatory reaction. women are affected twice as commonly as men and caucasians more frequently than other groups. the condition is frequently associated with giant cell arteritis and some theories pose the possibility that the two diseases arise from a single etiology or even that they are the same entity.

  • Giant Cell Arteritis

    a systemic autoimmune disorder that typically affects medium and large arteries, usually leading to occlusive granulomatous vasculitis with transmural infiltrate containing multinucleated giant cells. the temporal artery is commonly involved. this disorder appears primarily in people over the age of 50. symptoms include fever; fatigue; headache; visual impairment; pain in the jaw and tongue; and aggravation of pain by cold temperatures. (from adams et al., principles of neurology, 6th ed)

Patient EducationClinical

Polymyalgia Rheumatica

Polymyalgia rheumatica is a disorder that causes muscle pain and stiffness in your neck, shoulders, and hips. It is most common in women and almost always occurs in people over 50. The main symptom is stiffness after resting. Other symptoms include fever, weakness and weight loss. In some cases, polymyalgia rheumatica develops overnight.

Read the full article at MedlinePlus

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

Convert M35.3 to ICD-9-CMHistory

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

ICD-9-CM
725 Polymyalgia rheumatica
Exact Match The mapping is direct, with no qualifiers.

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 M35.3Overview

Is M35.3 (Other systemic involvement of connective tissue) a billable code?

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

What MS-DRG does M35.3 group to?

When polymyalgia rheumatica is the principal diagnosis on an inpatient stay, it groups to MS-DRG 545, 546, 547, with relative weights from 0.8362 to 2.4817 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M35.3?

Under the General Equivalence Mappings, polymyalgia rheumatica converts to ICD-9-CM 725 (polymyalgia rheumatica). The mapping is a direct match.

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.