2020 ICD-10-CM Diagnosis Code K59

Other functional intestinal disorders

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • K59 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM K59 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K59 - other international versions of ICD-10 K59 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K59. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • change in bowel habit NOS (
    ICD-10-CM Diagnosis Code R19.4

    Change in bowel habit

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    R19.4
    )
  • intestinal malabsorption (
    ICD-10-CM Diagnosis Code K90
    • K90 Intestinal malabsorption
      • K90.0 Celiac disease
      • K90.1 Tropical sprue
      • K90.2 Blind loop syndrome, not elsewhere classified...
      • K90.3 Pancreatic steatorrhea
      • K90.4 Other malabsorption due to intolerance
        • K90.41 Non-celiac gluten sensitivity
        • K90.49 Malabsorption due to intolerance, not elsewhe...
      • K90.8 Other intestinal malabsorption
        • K90.81 Whipple's disease
        • K90.89 Other intestinal malabsorption
      • K90.9 Intestinal malabsorption, unspecified
    K90.-
    )
  • psychogenic intestinal disorders (
    ICD-10-CM Diagnosis Code F45.8

    Other somatoform disorders

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Psychogenic dysmenorrhea
    • Psychogenic dysphagia, including 'globus hystericus'
    • Psychogenic pruritus
    • Psychogenic torticollis
    • Somatoform autonomic dysfunction
    • Teeth grinding
    Type 1 Excludes
    • sleep related teeth grinding (G47.63)
    F45.8
    )
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (K59) and the excluded code together.
  • functional disorders of stomach (
    ICD-10-CM Diagnosis Code K31
    • K31 Other diseases of stomach and duodenum
      • K31.0 Acute dilatation of stomach
      • K31.1 Adult hypertrophic pyloric stenosis
      • K31.2 Hourglass stricture and stenosis of stomach
      • K31.3 Pylorospasm, not elsewhere classified
      • K31.4 Gastric diverticulum
      • K31.5 Obstruction of duodenum
      • K31.6 Fistula of stomach and duodenum
      • K31.7 Polyp of stomach and duodenum
      • K31.8 Other specified diseases of stomach and duode...
        • K31.81 Angiodysplasia of stomach and duodenum
          • K31.811 Angiodysplasia of stomach and duodenum with b...
          • K31.819 Angiodysplasia of stomach and duodenum withou...
        • K31.82 Dieulafoy lesion (hemorrhagic) of stomach and...
        • K31.83 Achlorhydria
        • K31.84 Gastroparesis
        • K31.89 Other diseases of stomach and duodenum
      • K31.9 Disease of stomach and duodenum, unspecified
    K31.-
    )
The following code(s) above K59 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K59:
  • K00-K95
    2020 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • 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)
    Diseases of the digestive system
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To K59
K57.90 Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding
K57.91 Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding
K57.92 Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding
K57.93 Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding
K58 Irritable bowel syndrome
K58.0 Irritable bowel syndrome with diarrhea
K58.1 Irritable bowel syndrome with constipation
K58.2 Mixed irritable bowel syndrome
K58.8 Other irritable bowel syndrome
K58.9 Irritable bowel syndrome without diarrhea
K59 Other functional intestinal disorders
K59.0 Constipation
K59.00 …… unspecified
K59.01 Slow transit constipation
K59.02 Outlet dysfunction constipation
K59.03 Drug induced constipation
K59.04 Chronic idiopathic constipation
K59.09 Other constipation
K59.1 Functional diarrhea
K59.2 Neurogenic bowel, not elsewhere classified
K59.3 Megacolon, not elsewhere classified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.