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K59.4

K59.4: Anal spasm

Billable / specific codeICD-10-CM

K59.4 is a billable, specific ICD-10-CM code for anal spasm. It is valid for submission on a claim.

Check K59.4 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Proctalgia fugax

Excludes1 inherited from the categories above K59.4

A category’s note binds every code beneath it.

Written on K59: Other functional intestinal disorders

  • change in bowel habit NOS (R19.4)
  • intestinal malabsorption (K90.-)
  • psychogenic intestinal disorders (F45.8)

Excludes2 inherited from the categories above K59.4

Not part of this code, but both may be coded when both are present.

Written on K59: Other functional intestinal disorders

  • functional disorders of stomach (K31.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

K59.4 is named in 9 Medicare coverage policies: 9 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A55937Billing and Coding: Diagnostic Colonoscopy
  • A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
  • A56421Billing and Coding: CT of the Abdomen and Pelvis

Alphabetic index entries that lead here

  • Proctospasm
  • Proctalgia›fugax
  • Proctalgia›spasmodic
  • Spasm, spastic, spasticity›anus, ani(sphincter) (reflex)
  • Spasm, spastic, spasticity›rectum(sphincter)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under K59

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.