Valid for Submission
K52.21 is a billable diagnosis code used to specify a medical diagnosis of food protein-induced enterocolitis syndrome. The code K52.21 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.
The ICD-10-CM code K52.21 might also be used to specify conditions or terms like dietetic enterocolitis, dietetic jejunitis, food protein-induced colitis in infant, food protein-induced proctitis in infant, food-protein induced enterocolitis syndrome , jejunitis, etc.
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code K52.21:
Inclusion TermsInclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Use Additional CodeUse Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
- code for hypovolemic shock, if present R57.1
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code K52.21 are found in the index:
- - Allergy, allergic (reaction) (to) - T78.40
- - Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic) - See Also: Enteritis; - K52.9
- - Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) - K52.9
- - Gastroenteritis (acute) (chronic) (noninfectious) - See Also: Enteritis; - K52.9
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Dietetic enterocolitis
- Dietetic jejunitis
- Food protein-induced colitis in infant
- Food protein-induced proctitis in infant
- Food-protein induced enterocolitis syndrome
Diagnostic Related Groups - MS-DRG Mapping
|MS-DRG||MS-DRG Title||MCD||Relative Weight|
|391||ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITH MCC||06||1.2444|
|392||ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITHOUT MCC||06||0.7644|
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
K5221 replaces the following previously assigned ICD-10 code(s):
Convert K52.21 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code K52.21 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.