icd10free.comPowered by Curo
K59Non-billableSave

K59 - Other functional intestinal disorders

ICD-10-CM Chapter 11: Diseases of the digestive system · K55-K64 Other diseases of intestines (K55-K64) · Top-level category · FY2027

Coding Guidance

K59 is a non-billable heading. Report one of the 7 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom K59

Mutually exclusive: these conditions are never reported together with this code.

  • change in bowel habit NOS (R19.4)
  • intestinal malabsorption (K90.-)
  • psychogenic intestinal disorders (F45.8)
Excludes 2 — Not Included HereFrom K59

Not part of this code; report both codes when the patient has both conditions.

  • functional disorders of stomach (K31.-)
Excludes 2 — Not Included HereFrom Chapter K00-K95

Not part of this code; report both codes when the patient has both conditions.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

More Specific Codes (7)

K59.0Constipation→K59.1Functional diarrhea→K59.2Neurogenic bowel, not elsewhere classified→K59.3Megacolon, not elsewhere classified→K59.4Anal spasm→K59.8Other specified functional intestinal disorders→K59.9Functional intestinal disorder, unspecified→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with K59.