2021 ICD-10-CM Diagnosis Code K52.9

Noninfective gastroenteritis and colitis, unspecified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • K52.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM K52.9 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of K52.9 - other international versions of ICD-10 K52.9 may differ.
Applicable To
  • Colitis NOS
  • Enteritis NOS
  • Gastroenteritis NOS
  • Ileitis NOS
  • Jejunitis NOS
  • Sigmoiditis NOS
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 K52.9. 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.
  • diarrhea NOS (
    ICD-10-CM Diagnosis Code R19.7

    Diarrhea, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Diarrhea NOS
    Type 1 Excludes
    • functional diarrhea (K59.1)
    • neonatal diarrhea (P78.3)
    • psychogenic diarrhea (F45.8)
    R19.7
    )
  • functional diarrhea (
    ICD-10-CM Diagnosis Code K59.1

    Functional diarrhea

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Type 1 Excludes
    • diarrhea NOS (R19.7)
    • irritable bowel syndrome with diarrhea (K58.0)
    K59.1
    )
  • infectious gastroenteritis and colitis NOS (
    ICD-10-CM Diagnosis Code A09

    Infectious gastroenteritis and colitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Infectious colitis NOS
    • Infectious enteritis NOS
    • Infectious gastroenteritis NOS
    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)
    A09
    )
  • neonatal diarrhea (noninfective) (
    ICD-10-CM Diagnosis Code P78.3

    Noninfective neonatal diarrhea

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Neonatal diarrhea NOS
    P78.3
    )
  • psychogenic diarrhea (
    ICD-10-CM Diagnosis Code F45.8

    Other somatoform disorders

      2016 2017 2018 2019 2020 2021 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
    )
The following code(s) above K52.9 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 K52.9:
  • K00-K95
    2021 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
  • K50-K52
    2021 ICD-10-CM Range K50-K52

    Noninfective enteritis and colitis

    Includes
    • noninfective inflammatory bowel disease
    Type 1 Excludes
    Noninfective enteritis and colitis
Approximate Synonyms
  • Acute gastroenteritis
  • Chronic diarrhea
  • Colitis
  • Colitis (colon inflammation)
  • Diarrhea, chronic
  • Diarrhea, noninfectious
  • Enteritis (bowel condition)
  • Enteritis of small intestine
  • Enterocolitis
  • Enterocolitis (bowel condition)
  • Gastroenteritis
  • Inflammatory bowel disease
  • Non-infectious colitis
  • Non-infective diarrhea
  • Noninfectious colitis
  • Noninfectious gastroenteritis
  • Pericolitis
  • Perisigmoiditis
Clinical Information
  • A disorder characterized by inflammation of the colon.
  • An inflammatory disorder that affects the upper and lower gastrointestinal tract. Most commonly, this is attributed to viruses; however bacteria, parasites or adverse reactions can also be the culprit. Symptoms include acute diarrhea and vomiting.
  • Have you ever had the "stomach flu?" what you probably had was gastroenteritis - not a type of flu at all. Gastroenteritis is an inflammation of the lining of the intestines caused by a virus, bacteria or parasites. Viral gastroenteritis is the second most common illness in the United States The cause is often a norovirus infection. It spreads through contaminated food or water, and contact with an infected person. The best prevention is frequent hand washing. Symptoms of gastroenteritis include diarrhea, abdominal pain, vomiting, headache, fever and chills. Most people recover with no treatment. The most common problem with gastroenteritis is dehydration. This happens if you do not drink enough fluids to replace what you lose through vomiting and diarrhea. Dehydration is most common in babies, young children, the elderly and people with weak immune systems.
  • Inflammation of any segment of the gastrointestinal tract from esophagus to rectum. Causes of gastroenteritis are many including genetic, infection, hypersensitivity, drug effects, and cancer.
  • Inflammation of any segment of the gastrointestinal tract from esophagus to rectum; causes of gastroenteritis are many including genetic, infection, hypersensitivity, drug effects, and cancer.
  • Inflammation of any segment of the ileum and the ileocecal valve.
  • Inflammation of any segment of the small intestine.
  • Inflammation of the bowel
  • Inflammation of the colon section of the large intestine (intestine, large), usually with symptoms such as diarrhea (often with blood and mucus), abdominal pain, and fever.
  • Inflammation of the colon.
  • Inflammation of the ileum.
  • Inflammation of the intestine, especially of the small intestine.
  • Inflammation of the lining of the stomach and the intestines. Symptoms may include nausea, vomiting, diarrhea, and abdominal cramps (dull or sharp pains). Gastroenteritis may be caused by infection with bacteria, parasites, or viruses. It may also be caused by food poisoning, allergic reactions, or reactions to certain medicines or foods.
  • Inflammation of the mucous membrane of the stomach and intestines
  • Inflammation of the small intestine.
ICD-10-CM K52.9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
  • 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc

Convert K52.9 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
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to K52.9:
  • Type 1 Excludes: A09
    , A09
    , A09
    , A09
    , K52.3
    ICD-10-CM Diagnosis Code A09

    Infectious gastroenteritis and colitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Infectious colitis NOS
    • Infectious enteritis NOS
    • Infectious gastroenteritis NOS
    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 Diagnosis Code A09

    Infectious gastroenteritis and colitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Infectious colitis NOS
    • Infectious enteritis NOS
    • Infectious gastroenteritis NOS
    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 Diagnosis Code A09

    Infectious gastroenteritis and colitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Infectious colitis NOS
    • Infectious enteritis NOS
    • Infectious gastroenteritis NOS
    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 Diagnosis Code A09

    Infectious gastroenteritis and colitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Infectious colitis NOS
    • Infectious enteritis NOS
    • Infectious gastroenteritis NOS
    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 Diagnosis Code K52.3

    Indeterminate colitis

      2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Colonic inflammatory bowel disease unclassified (IBDU)
    Type 1 Excludes
    • unspecified colitis (K52.9)

Diagnosis Index entries containing back-references to K52.9:

ICD-10-CM Codes Adjacent To K52.9
K52.3 Indeterminate colitis
K52.8 Other specified noninfective gastroenteritis and colitis
K52.81 Eosinophilic gastritis or gastroenteritis
K52.82 Eosinophilic colitis
K52.83 Microscopic colitis
K52.831 Collagenous colitis
K52.832 Lymphocytic colitis
K52.838 Other microscopic colitis
K52.839 …… unspecified
K52.89 Other specified noninfective gastroenteritis and colitis
K52.9 Noninfective gastroenteritis and colitis, unspecified
K55 Vascular disorders of intestine
K55.0 Acute vascular disorders of intestine
K55.01 Acute (reversible) ischemia of small intestine
K55.011 Focal (segmental) acute (reversible) ischemia of small intestine
K55.012 Diffuse acute (reversible) ischemia of small intestine
K55.019 …… extent unspecified
K55.02 Acute infarction of small intestine
K55.021 Focal (segmental) acute infarction of small intestine
K55.022 Diffuse acute infarction of small intestine
K55.029 …… extent unspecified

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