2026 ICD-10-CM Diagnosis Code M10.9Gout, unspecified

ICD-10-CM Codes›M00–M99›M05-M14›M10

ICD-10-CM M10.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M10.9 is a billable ICD-10-CM diagnosis code for gout, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 553 through 554. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gout.

Code Identity

ICD-10-CM Code
M10.9
Billable Status
Yes — Valid for Submission
Code Describes
Gout, unspecified
Short Description
Gout, unspecified
Same as the full description in the CMS dataset.
Parent Code
M10
Gout

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM05-M14Inflammatory polyarthropathies
CategoryM10Gout
This CodeM10.9Gout, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute gout
  • Bilateral arthritis of elbows
  • Blood urate above reference range
  • Blood urate outside reference range
  • Bursitis of left elbow
  • Bursitis of olecranon of left elbow
  • Bursitis of olecranon of right elbow
  • Bursitis of right elbow
  • Crystal arthropathy of elbow
  • Crystal arthropathy of hand
  • Familial juvenile hyperuricemic nephropathy
  • Gout
  • Gout associated problem
  • Gout monitoring status
  • Gout treatment changed
  • Gouty arthritis
  • Gouty arthritis of bilateral elbows
  • Gouty arthritis of bilateral hands
  • Gouty arthritis of elbow
  • Gouty arthritis of great toe
  • Gouty arthritis of hand
  • Gouty arthritis of left elbow
  • Gouty arthritis of left foot
  • Gouty arthritis of left great toe
  • Gouty arthritis of left hand
  • Gouty arthritis of right elbow
  • Gouty arthritis of right foot
  • Gouty arthritis of right great toe
  • Gouty arthritis of right hand
  • Gouty arthritis of temporomandibular joint
  • Gouty arthritis of toe
  • Gouty bursitis
  • Gouty bursitis of left olecranon
  • Gouty bursitis of olecranon
  • Gouty bursitis of right olecranon
  • Gouty iritis
  • Gouty neuritis
  • Gouty proteinuria
  • Hyperuricemia
  • Intercritical gout
  • Joints gout affected
  • Kidney crystallization
  • Pre-treatment uric acid level
  • Visceral gout

Tabular List NotesGuidance

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

Inclusion Terms

  • Gout NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

  • - Iritis - See Also: Iridocyclitis;

    • - gouty - See Also: Gout, by type; - M10.9

  • - Podagra - See Also: Gout; - M10.9

External Cause of Injuries IndexGuidance

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

    • Gout, gouty(acute) (attack) (flare)
    • Iritis
      • gouty
    • Neuritis(rheumatoid)
      • gouty
    • Podagra

Clinical ClassificationClinical

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

CCSR MUS033
Gout
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Arthritis, Gouty

    arthritis, especially of the great toe, as a result of gout. acute gouty arthritis often is precipitated by trauma, infection, surgery, etc. the initial attacks are usually monoarticular but later attacks are often polyarticular. acute and chronic gouty arthritis are associated with accumulation of monosodium urate in and around affected joints.

  • Gout

    metabolic disorder characterized by recurrent acute arthritis, hyperuricemia and deposition of sodium urate in and around the joints, sometimes with formation of uric acid calculi.

  • Gout Suppressants

    agents that increase uric acid excretion by the kidney (uricosuric agents), decrease uric acid production (antihyperuricemics), or alleviate the pain and inflammation of acute attacks of gout.

  • Hyperuricemia

    excessive uric acid or urate in blood as defined by its solubility in plasma at 37 degrees c; greater than 0.42mmol per liter (7.0mg/dl) in men or 0.36mmol per liter (6.0mg/dl) in women. this condition is caused by overproduction of uric acid or impaired renal clearance. hyperuricemia can be acquired, drug-induced or genetically determined (lesch-nyhan syndrome). it is associated with hypertension and gout.

  • Lesch-Nyhan Syndrome

    an inherited disorder transmitted as a sex-linked trait and caused by a deficiency of an enzyme of purine metabolism; hypoxanthine phosphoribosyltransferase. affected individuals are normal in the first year of life and then develop psychomotor retardation, extrapyramidal movement disorders, progressive spasticity, and seizures. self-destructive behaviors such as biting of fingers and lips are seen frequently. intellectual impairment may also occur but is typically not severe. elevation of uric acid in the serum leads to the development of renal calculi and gouty arthritis. (menkes, textbook of child neurology, 5th ed, pp127)

  • Uric Acid

    an oxidation product, via xanthine oxidase, of oxypurines such as xanthine and hypoxanthine. it is the final oxidation product of purine catabolism in humans and primates, whereas in most other mammals urate oxidase further oxidizes it to allantoin.

  • Uricosuric Agents

    gout suppressants that act directly on the renal tubule to increase the excretion of uric acid, thus reducing its concentrations in plasma.

  • Hypoxanthine Phosphoribosyltransferase

    an enzyme that catalyzes the conversion of 5-phosphoribosyl-1-pyrophosphate and hypoxanthine, guanine, or mercaptopurine to the corresponding 5'-mononucleotides and pyrophosphate. the enzyme is important in purine biosynthesis as well as central nervous system functions. complete lack of enzyme activity is associated with the lesch-nyhan syndrome, while partial deficiency results in overproduction of uric acid. ec 2.4.2.8.

Patient EducationClinical

Gout

Gout is a common type of inflammatory arthritis. It causes pain, swelling, and redness in one or more joints. It usually happens as a flare, which can last for a week or two and then gets better. The flares often begin in your big toe or a lower limb.

The full article covers:

  • What is gout?
  • What causes gout?
  • Who is more likely to develop gout?
  • What are the symptoms of gout?
  • How is gout diagnosed?
  • What are the treatments for gout?

Read the full article at MedlinePlus

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

Convert M10.9 to ICD-9-CMHistory

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

ICD-9-CM
274.9 Gout NOS
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 M10.9Overview

Is M10.9 (Gout) a billable code?

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

What MS-DRG does M10.9 group to?

When gout, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 553, 554, with relative weights from 0.8301 to 1.2963 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M10.9?

Under the General Equivalence Mappings, gout, unspecified converts to ICD-9-CM 274.9 (gout NOS). 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.