2020 ICD-10-CM Diagnosis Code K91.850

Pouchitis

    2016 2017 2018 2019 2020 Billable/Specific Code
  • K91.850 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 K91.850 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K91.850 - other international versions of ICD-10 K91.850 may differ.
Applicable To
  • Inflammation of internal ileoanal pouch
The following code(s) above K91.850 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 K91.850:
  • 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
  • K91
    ICD-10-CM Diagnosis Code K91

    Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • complications of artificial opening of digestive system (K94.-)
    • complications of bariatric procedures (K95.-)
    • gastrojejunal ulcer (K28.-)
    • postprocedural (radiation) retroperitoneal abscess (K68.11)
    • radiation colitis (K52.0)
    • radiation gastroenteritis (K52.0)
    • radiation proctitis (K62.7)
    Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
Approximate Synonyms
  • Ileal pouchitis
  • Ileoanal pouch inflammation
  • Inflammation of ileoanal pouch
Clinical Information
  • Acute inflammation in the intestinal mucosa of the continent ileal reservoir (or pouch) in patients who have undergone ileostomy and restorative proctocolectomy (proctocolectomy, restorative).
ICD-10-CM K91.850 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 393 Other digestive system diagnoses with mcc
  • 394 Other digestive system diagnoses with cc
  • 395 Other digestive system diagnoses without cc/mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert K91.850 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 K91.850:

ICD-10-CM Codes Adjacent To K91.850
K91.71 Accidental puncture and laceration of a digestive system organ or structure during a digestive system procedure
K91.72 Accidental puncture and laceration of a digestive system organ or structure during other procedure
K91.8 Other intraoperative and postprocedural complications and disorders of digestive system
K91.81 Other intraoperative complications of digestive system
K91.82 Postprocedural hepatic failure
K91.83 Postprocedural hepatorenal syndrome
K91.84 Postprocedural hemorrhage of a digestive system organ or structure following a procedure
K91.840 Postprocedural hemorrhage of a digestive system organ or structure following a digestive system procedure
K91.841 Postprocedural hemorrhage of a digestive system organ or structure following other procedure
K91.85 Complications of intestinal pouch
K91.850 Pouchitis
K91.858 Other complications of intestinal pouch
K91.86 Retained cholelithiasis following cholecystectomy
K91.87 Postprocedural hematoma and seroma of a digestive system organ or structure following a procedure
K91.870 Postprocedural hematoma of a digestive system organ or structure following a digestive system procedure
K91.871 Postprocedural hematoma of a digestive system organ or structure following other procedure
K91.872 Postprocedural seroma of a digestive system organ or structure following a digestive system procedure
K91.873 Postprocedural seroma of a digestive system organ or structure following other procedure
K91.89 Other postprocedural complications and disorders of digestive system
K92 Other diseases of digestive system
K92.0 Hematemesis

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