ICD List 2025-2026 Edition

Related 2026 ICD-10-CM Codes to T78.40XA

Allergy, unspecified, initial encounter

View Code T78.40XA

ICD Code	Description	Valid for Submission
T78	Adverse effects, not elsewhere classified	NON-BILLABLE CODE
T78.0	Anaphylactic reaction due to food	NON-BILLABLE CODE
T78.00	Anaphylactic reaction due to unspecified food	NON-BILLABLE CODE
T78.00XA	Anaphylactic reaction due to unspecified food, initial encounter	BILLABLE CODE
T78.00XD	Anaphylactic reaction due to unspecified food, subsequent encounter	BILLABLE CODE
T78.00XS	Anaphylactic reaction due to unspecified food, sequela	BILLABLE CODE
T78.01	Anaphylactic reaction due to peanuts	NON-BILLABLE CODE
T78.01XA	Anaphylactic reaction due to peanuts, initial encounter	BILLABLE CODE
T78.01XD	Anaphylactic reaction due to peanuts, subsequent encounter	BILLABLE CODE
T78.01XS	Anaphylactic reaction due to peanuts, sequela	BILLABLE CODE
T78.02	Anaphylactic reaction due to shellfish (crustaceans)	NON-BILLABLE CODE
T78.02XA	Anaphylactic reaction due to shellfish (crustaceans), initial encounter	BILLABLE CODE
T78.02XD	Anaphylactic reaction due to shellfish (crustaceans), subsequent encounter	BILLABLE CODE
T78.02XS	Anaphylactic reaction due to shellfish (crustaceans), sequela	BILLABLE CODE
T78.03	Anaphylactic reaction due to other fish	NON-BILLABLE CODE
T78.03XA	Anaphylactic reaction due to other fish, initial encounter	BILLABLE CODE
T78.03XD	Anaphylactic reaction due to other fish, subsequent encounter	BILLABLE CODE
T78.03XS	Anaphylactic reaction due to other fish, sequela	BILLABLE CODE
T78.04	Anaphylactic reaction due to fruits and vegetables	NON-BILLABLE CODE
T78.04XA	Anaphylactic reaction due to fruits and vegetables, initial encounter	BILLABLE CODE
T78.04XD	Anaphylactic reaction due to fruits and vegetables, subsequent encounter	BILLABLE CODE
T78.04XS	Anaphylactic reaction due to fruits and vegetables, sequela	BILLABLE CODE
T78.05	Anaphylactic reaction due to tree nuts and seeds	NON-BILLABLE CODE
T78.05XA	Anaphylactic reaction due to tree nuts and seeds, initial encounter	BILLABLE CODE
T78.05XD	Anaphylactic reaction due to tree nuts and seeds, subsequent encounter	BILLABLE CODE
T78.05XS	Anaphylactic reaction due to tree nuts and seeds, sequela	BILLABLE CODE
T78.06	Anaphylactic reaction due to food additives	NON-BILLABLE CODE
T78.06XA	Anaphylactic reaction due to food additives, initial encounter	BILLABLE CODE
T78.06XD	Anaphylactic reaction due to food additives, subsequent encounter	BILLABLE CODE
T78.06XS	Anaphylactic reaction due to food additives, sequela	BILLABLE CODE
T78.07	Anaphylactic reaction due to milk and dairy products	NON-BILLABLE CODE
T78.070	Anaphylactic reaction due to milk and dairy products with tolerance to baked milk	NON-BILLABLE CODE
T78.070A	Anaphylactic reaction due to milk and dairy products with tolerance to baked milk, initial encounter	BILLABLE CODE
T78.070D	Anaphylactic reaction due to milk and dairy products with tolerance to baked milk, subsequent encounter	BILLABLE CODE
T78.070S	Anaphylactic reaction due to milk and dairy products with tolerance to baked milk, sequela	BILLABLE CODE
T78.071	Anaphylactic reaction due to milk and dairy products with reactivity to baked milk	NON-BILLABLE CODE
T78.071A	Anaphylactic reaction due to milk and dairy products with reactivity to baked milk, initial encounter	BILLABLE CODE
T78.071D	Anaphylactic reaction due to milk and dairy products with reactivity to baked milk, subsequent encounter	BILLABLE CODE
T78.071S	Anaphylactic reaction due to milk and dairy products with reactivity to baked milk, sequela	BILLABLE CODE
T78.079	Anaphylactic reaction due to milk and dairy products, unspecified	NON-BILLABLE CODE
T78.079A	Anaphylactic reaction due to milk and dairy products, unspecified, initial encounter	BILLABLE CODE
T78.079D	Anaphylactic reaction due to milk and dairy products, unspecified, subsequent encounter	BILLABLE CODE
T78.079S	Anaphylactic reaction due to milk and dairy products, unspecified, sequela	BILLABLE CODE
T78.08	Anaphylactic reaction due to eggs	NON-BILLABLE CODE
T78.080	Anaphylactic reaction due to egg with tolerance to baked egg	NON-BILLABLE CODE
T78.080A	Anaphylactic reaction due to egg with tolerance to baked egg, initial encounter	BILLABLE CODE
T78.080D	Anaphylactic reaction due to egg with tolerance to baked egg, subsequent encounter	BILLABLE CODE
T78.080S	Anaphylactic reaction due to egg with tolerance to baked egg, sequela	BILLABLE CODE
T78.081	Anaphylactic reaction due to egg with reactivity to baked egg	NON-BILLABLE CODE
T78.081A	Anaphylactic reaction due to egg with reactivity to baked egg, initial encounter	BILLABLE CODE
T78.081D	Anaphylactic reaction due to egg with reactivity to baked egg, subsequent encounter	BILLABLE CODE
T78.081S	Anaphylactic reaction due to egg with reactivity to baked egg, sequela	BILLABLE CODE
T78.089	Anaphylactic reaction due to eggs, unspecified	NON-BILLABLE CODE
T78.089A	Anaphylactic reaction due to eggs, unspecified, initial encounter	BILLABLE CODE
T78.089D	Anaphylactic reaction due to eggs, unspecified, subsequent encounter	BILLABLE CODE
T78.089S	Anaphylactic reaction due to eggs, unspecified, sequela	BILLABLE CODE
T78.09	Anaphylactic reaction due to other food products	NON-BILLABLE CODE
T78.09XA	Anaphylactic reaction due to other food products, initial encounter	BILLABLE CODE
T78.09XD	Anaphylactic reaction due to other food products, subsequent encounter	BILLABLE CODE
T78.09XS	Anaphylactic reaction due to other food products, sequela	BILLABLE CODE
T78.1	Other adverse food reactions, not elsewhere classified	NON-BILLABLE CODE
T78.11	Other adverse food reactions due to milk and dairy products	NON-BILLABLE CODE
T78.110	Other adverse food reactions due to milk and dairy products with tolerance to baked milk	NON-BILLABLE CODE
T78.110A	Other adverse food reactions due to milk and dairy products with tolerance to baked milk, initial encounter	BILLABLE CODE
T78.110D	Other adverse food reactions due to milk and dairy products with tolerance to baked milk, subsequent encounter	BILLABLE CODE
T78.110S	Other adverse food reactions due to milk and dairy products with tolerance to baked milk, sequela	BILLABLE CODE
T78.111	Other adverse food reaction due to milk and dairy products with reactivity to baked milk	NON-BILLABLE CODE
T78.111A	Other adverse food reaction due to milk and dairy products with reactivity to baked milk, initial encounter	BILLABLE CODE
T78.111D	Other adverse food reaction due to milk and dairy products with reactivity to baked milk, subsequent encounter	BILLABLE CODE
T78.111S	Other adverse food reaction due to milk and dairy products with reactivity to baked milk, sequela	BILLABLE CODE
T78.119	Other adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified	NON-BILLABLE CODE
T78.119A	Other adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, initial encounter	BILLABLE CODE
T78.119D	Other adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, subsequent encounter	BILLABLE CODE
T78.119S	Other adverse food reaction due to milk and dairy products with baked milk tolerance/reactivity, unspecified, sequela	BILLABLE CODE
T78.12	Other adverse food reaction due to eggs	NON-BILLABLE CODE
T78.120	Other adverse food reaction due to egg with tolerance to baked egg	NON-BILLABLE CODE
T78.120A	Other adverse food reaction due to egg with tolerance to baked egg, initial encounter	BILLABLE CODE
T78.120D	Other adverse food reaction due to egg with tolerance to baked egg, subsequent encounter	BILLABLE CODE
T78.120S	Other adverse food reaction due to egg with tolerance to baked egg, sequela	BILLABLE CODE
T78.121	Other adverse food reaction due to egg with reactivity to baked egg	NON-BILLABLE CODE
T78.121A	Other adverse food reaction due to egg with reactivity to baked egg, initial encounter	BILLABLE CODE
T78.121D	Other adverse food reaction due to egg with reactivity to baked egg, subsequent encounter	BILLABLE CODE
T78.121S	Other adverse food reaction due to egg with reactivity to baked egg, sequela	BILLABLE CODE
T78.129	Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified	NON-BILLABLE CODE
T78.129A	Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, initial encounter	BILLABLE CODE
T78.129D	Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, subsequent encounter	BILLABLE CODE
T78.129S	Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, sequela	BILLABLE CODE
T78.19	Other adverse food reactions, not elsewhere classified	NON-BILLABLE CODE
T78.19XA	Other adverse food reactions, not elsewhere classified, initial encounter	BILLABLE CODE
T78.19XD	Other adverse food reactions, not elsewhere classified, subsequent encounter	BILLABLE CODE
T78.19XS	Other adverse food reactions, not elsewhere classified, sequela	BILLABLE CODE
T78.2	Anaphylactic shock, unspecified	NON-BILLABLE CODE
T78.2XXA	Anaphylactic shock, unspecified, initial encounter	BILLABLE CODE
T78.2XXD	Anaphylactic shock, unspecified, subsequent encounter	BILLABLE CODE
T78.2XXS	Anaphylactic shock, unspecified, sequela	BILLABLE CODE
T78.3	Angioneurotic edema	NON-BILLABLE CODE
T78.3XXA	Angioneurotic edema, initial encounter	BILLABLE CODE
T78.3XXD	Angioneurotic edema, subsequent encounter	BILLABLE CODE
T78.3XXS	Angioneurotic edema, sequela	BILLABLE CODE
T78.4	Other and unspecified allergy	NON-BILLABLE CODE
T78.40	Allergy, unspecified	NON-BILLABLE CODE
T78.40XD	Allergy, unspecified, subsequent encounter	BILLABLE CODE
T78.40XS	Allergy, unspecified, sequela	BILLABLE CODE
T78.41	Arthus phenomenon	NON-BILLABLE CODE
T78.41XA	Arthus phenomenon, initial encounter	BILLABLE CODE
T78.41XD	Arthus phenomenon, subsequent encounter	BILLABLE CODE
T78.41XS	Arthus phenomenon, sequela	BILLABLE CODE
T78.49	Other allergy	NON-BILLABLE CODE
T78.49XA	Other allergy, initial encounter	BILLABLE CODE
T78.49XD	Other allergy, subsequent encounter	BILLABLE CODE
T78.49XS	Other allergy, sequela	BILLABLE CODE
T78.8	Other adverse effects, not elsewhere classified	NON-BILLABLE CODE
T78.8XXA	Other adverse effects, not elsewhere classified, initial encounter	BILLABLE CODE
T78.8XXD	Other adverse effects, not elsewhere classified, subsequent encounter	BILLABLE CODE
T78.8XXS	Other adverse effects, not elsewhere classified, sequela	BILLABLE CODE

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