2020 ICD-10-CM Diagnosis Code K59.8

Other specified functional intestinal disorders

    2016 2017 2018 2019 2020 Billable/Specific Code
  • K59.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM K59.8 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K59.8 - other international versions of ICD-10 K59.8 may differ.
Applicable To
  • Atony of colon
  • Pseudo-obstruction (acute) (chronic) of intestine
The following code(s) above K59.8 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 K59.8:
  • 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
  • K59
    ICD-10-CM Diagnosis Code K59

    Other functional intestinal disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • change in bowel habit NOS (R19.4)
    • intestinal malabsorption (K90.-)
    • psychogenic intestinal disorders (F45.8)
    Type 2 Excludes
    • functional disorders of stomach (K31.-)
    Other functional intestinal disorders
Approximate Synonyms
  • Chronic primary gi pseudoobstruction
  • Primary chronic pseudo-obstruction of gastrointestinal tract
ICD-10-CM K59.8 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
  • 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc

Convert K59.8 to ICD-9-CM

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

Diagnosis Index entries containing back-references to K59.8:
  • Achalasia (cardia) (esophagus) K22.0
    ICD-10-CM Diagnosis Code K22.0

    Achalasia of cardia

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Achalasia NOS
    • Cardiospasm
    Type 1 Excludes
    • congenital cardiospasm (Q39.5)
    • sphincteral NEC K59.8
  • Atonia, atony, atonic
  • Contraction(s)
    • anus K59.8
    • rectum, rectal K59.8 (sphincter)
  • Dilatation
  • Disease, diseased - see also Syndrome
    • intestine K63.9
      ICD-10-CM Diagnosis Code K63.9

      Disease of intestine, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • functional K59.9
        ICD-10-CM Diagnosis Code K59.9

        Functional intestinal disorder, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        • specified NEC K59.8
  • Dyskinesia G24.9
    ICD-10-CM Diagnosis Code G24.9

    Dystonia, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Dyskinesia NOS
    • intestinal K59.8
  • Dyspepsia R10.13
    ICD-10-CM Diagnosis Code R10.13

    Epigastric pain

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Dyspepsia
    Type 1 Excludes
    • functional dyspepsia (K30)
    • intestinal K59.8
  • Hyperemia (acute) (passive) R68.89
    ICD-10-CM Diagnosis Code R68.89

    Other general symptoms and signs

      2016 2017 2018 2019 2020 Billable/Specific Code
    • enteric K59.8
    • intestine K59.8
  • Hypofunction
    • intestinal K59.8
  • Hypomotility
  • Ileus (bowel) (colon) (inhibitory) (intestine) K56.7
    ICD-10-CM Diagnosis Code K56.7

    Ileus, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    Type 2 Excludes
    • intestinal obstruction with hernia (K40-K46)
    • myxedema K59.8
  • Immobile, immobility
    • intestine K59.8
  • Irritable, irritability R45.4
    ICD-10-CM Diagnosis Code R45.4

    Irritability and anger

      2016 2017 2018 2019 2020 Billable/Specific Code
    • duodenum K59.8
    • ileum K59.8
    • jejunum K59.8
    • rectum K59.8
  • Paralysis, paralytic (complete) (incomplete) G83.9
    ICD-10-CM Diagnosis Code G83.9

    Paralytic syndrome, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • digestive organs NEC K59.8
  • Pseudo-obstruction intestine K59.8 (acute) (chronic) (idiopathic) (intermittent secondary) (primary)
  • Spasm(s) R25.2
    - see also condition
    ICD-10-CM Diagnosis Code R25.2

    Cramp and spasm

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 2 Excludes
    • duodenum K59.8
  • Stasis
    • cecum K59.8
    • colon K59.8
    • ileocecal coil K59.8
    • ileum K59.8
    • intestinal K59.8
    • jejunum K59.8
    • rectal K59.8
  • Syndrome - see also Disease
    • splenic
      • flexure K59.8
    • hepatic flexure K59.8
    • König's K59.8

ICD-10-CM Codes Adjacent To K59.8
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
K59.31 Toxic megacolon
K59.39 Other megacolon
K59.4 Anal spasm
K59.8 Other specified functional intestinal disorders
K59.9 Functional intestinal disorder, unspecified
K60 Fissure and fistula of anal and rectal regions
K60.0 Acute anal fissure
K60.1 Chronic anal fissure
K60.2 Anal fissure, unspecified
K60.3 Anal fistula
K60.4 Rectal fistula
K60.5 Anorectal fistula
K61 Abscess of anal and rectal regions
K61.0 Anal abscess

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