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K52.21 vs T62.93XD

K52.21 (Food protein-induced enterocolitis syndrome) compared with T62.93XD (Toxic effect of unspecified noxious substance eaten as food, assault, subsequent encounter), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1. MedCoder-derived

Relationship

Conflict

Excludes1 conflict

T62.93XD
Toxic effect of unspecified noxious substance eaten as food, assault, subsequent encounter
↔
K52.21
Food protein-induced enterocolitis syndrome

Not coded here — these two are mutually exclusive.

“food protein-induced enterocolitis syndrome (K52.21)”

An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.

Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Can these codes be reported together?

No — do not report together. T62.93XD carries an Excludes1 note covering K52.21: “food protein-induced enterocolitis syndrome (K52.21)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

K52.21Food protein-induced enterocolitis syndromeT62.93XDToxic effect of unspecified noxious substance eaten as food, assault, subsequent encounter
Billing statusBillableBillable
ClassificationK00-K95 — Diseases of the Digestive System (K00-K95)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionFood protein-induced enterocolitis syndrome is a billable ICD-10-CM diagnosis code (K52.21).Toxic effect of unspecified noxious substance eaten as food, assault, subsequent encounter is a billable ICD-10-CM diagnosis code (T62.93D).
7th character—The appropriate 7th character is to be added to each code from category T62
Includes
noninfective inflammatory bowel disease
FPIES
—
Use additional code
code for hypovolemic shock, if present (R57.1)
code to identify type of food allergy (Z91.01-, Z91.02-)
code(s):
for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
personal history of foreign body fully removed (Z87.821)
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources