K52.21

Billable code

Food protein-induced enterocolitis syndrome

The ICD-10 code for food protein-induced enterocolitis syndrome is K52.21.

Clinical notes

Also known as

Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.

FPIES

Use additional code

This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.

code for hypovolemic shock, if present (R57.1)

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

Related codes in this category

K52.22Food protein-induced enteropathy
K52.29Other allergic and dietetic gastroenteritis and colitis
K52.21Food protein-induced enterocolitis syndrome

ICD-9-CM equivalent

Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.

5583Approximate match

View full ICD-10 → ICD-9 crosswalk →

Associated MS-DRGs

K52.21 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.

Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.