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K59.1
Billable

Functional diarrhea

Chapter 11: Diseases of the digestive system

Excludes1

2 items
  • diarrhea NOS (R19.7)
  • irritable bowel syndrome with diarrhea (K58.0)

Billable Code

K59.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Referenced in Diagnoses

Conditions that use this ICD-10 code in their documentation

View documentation for functional diarrhea
functional diarrhea
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Functional Diarrhea

View documentation for loose bowel movements
loose bowel movements
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Diarrhea, unspecified

View documentation for loose stool
loose stool
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Diarrhea, unspecified

Additional Information from Parent Codes

The following information may apply to this code from its parent codes in the ICD-10 hierarchy. This information is important for proper coding and classification.

Excludes1

3 items

From K59:

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

Excludes2

9 items

From K00-K95:

  • 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)

From K59:

  • functional disorders of stomach (K31.-)
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