2026 ICD-10-CM Diagnosis Code G93.32Myalgic encephalomyelitis/chronic fatigue syndrome

ICD-10-CM Codes›G00–G99›G89-G99›G93

ICD-10-CM G93.32
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G93.32 is a billable ICD-10-CM diagnosis code for myalgic encephalomyelitis/chronic fatigue syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 947 through 948. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (neither hereditary nor degenerative).

Code Identity

ICD-10-CM Code
G93.32
Billable Status
Yes — Valid for Submission
Code Describes
Myalgic encephalomyelitis/chronic fatigue syndrome
Short Description
Myalgic encephalomyelitis/chronic fatigue syndrome
Same as the full description in the CMS dataset.
Parent Code
G93.3
Postviral and related fatigue syndromes

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG93Other disorders of brain
This CodeG93.32Myalgic encephalomyelitis/chronic fatigue syndrome

Tabular List NotesGuidance

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

Inclusion Terms

  • Chronic fatigue syndrome
  • ME/CFS
  • Myalgic encephalomyelitis

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.

    • Encephalomyelitis
      • myalgic
    • Encephalomyelitis
      • myalgic
        • chronic fatigue syndrome [ME/CFS]
    • ME/CFS(myalgic encephalomyelitis/chronic fatigue syndrome)
    • SEID(systemic exertion intolerance disease)
    • Syndrome
      • fatigue
        • chronic
    • Systemic exertion intolerance disease [SEID]

Clinical ClassificationClinical

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

CCSR NVS020
Other nervous system disorders (neither hereditary nor degenerative)
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a serious, long-term illness that affects many body systems. Another name for it is chronic fatigue syndrome (CFS). ME/CFS can often make you unable to do your usual activities. Sometimes you may not even be able to get out of bed.

The full article covers:

  • What is myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)?
  • What causes myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)?
  • Who is more likely to develop myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)?
  • What are the symptoms of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)?
  • How is myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) diagnosed?
  • What are the treatments for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)?

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement G93.32 replaces the following previously assigned code(s):

  • G93.3 - Postviral and related fatigue syndromes
  • G93.3 - Postviral fatigue syndrome
  • R53.82 - Chronic fatigue, unspecified
FY 2023AddedAdded to the ICD-10-CM code setEffective October 1, 2022.
FY 2024–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G93.32Overview

Is G93.32 (Postviral and related fatigue syndromes) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report myalgic encephalomyelitis/chronic fatigue syndrome on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does G93.32 group to?

When myalgic encephalomyelitis/chronic fatigue syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 947, 948, with relative weights from 0.8005 to 1.2694 depending on complications. Higher weights mean higher Medicare reimbursement.

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.