Specific code icon 2017 ICD-10-CM Diagnosis Code A09

Infectious gastroenteritis and colitis, unspecified

    2016 2017 Billable/Specific Code

  • A09 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • This is the American ICD-10-CM version of A09. Other international versions of ICD-10 A09 may differ.
  • Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Information
  • A viral or bacterial infectious process affecting the large intestine.
Applicable To
  • Infectious colitis NOS
  • Infectious enteritis NOS
  • Infectious gastroenteritis NOS
Approximate Synonyms
  • Infectious colitis
  • Infectious diarrhea
  • Infectious diarrheal disease
  • Infectious gastroenteritis
  • Polyarticular postdysenteric arthritis
  • Postdysenteric arthritis
  • Postdysenteric arthritis of left ankle
  • Postdysenteric arthritis of left elbow
  • Postdysenteric arthritis of left hand
  • Postdysenteric arthritis of left hip
  • Postdysenteric arthritis of left knee
  • Postdysenteric arthritis of left shoulder
  • Postdysenteric arthritis of left wrist
  • Postdysenteric arthritis of multiple sites
  • Postdysenteric arthritis of vertebra
  • Postdysenteric arthropathy
  • Post-dysenteric arthropathy
  • Post-dysenteric arthropathy of left ankle and/or foot
  • Post-dysenteric arthropathy of left elbow
  • Post-dysenteric arthropathy of left hand
  • Post-dysenteric arthropathy of left hip
  • Post-dysenteric arthropathy of left knee
  • Post-dysenteric arthropathy of left shoulder
  • Post-dysenteric arthropathy of left wrist
  • Post-dysenteric arthropathy of vertebrae
  • Post-dysenteric reactive arthropathy of multiple sites
  • Travelers diarrhea
  • Traveler's diarrhea
Type 1 Excludes
  • colitis NOS (K52.9)
  • diarrhea NOS (R19.7)
  • enteritis NOS (K52.9)
  • gastroenteritis NOS (K52.9)
  • noninfective gastroenteritis and colitis, unspecified (K52.9)
ICD-10-CM A09 is grouped within Diagnostic Related Group(s) (MS-DRG v34.0):
  • 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
  • 392 Esophagitis, gastroenteristis and miscellaneous digestive disorders without mcc

Convert ICD-10-CM A09 to ICD-9-CM

The following ICD-10-CM Index entries contain back-references to ICD-10-CM A09: