T78.2 Anaphylactic shock, unspecified

Non-billable ICD-10-CM code.

Applicable to

• Allergic shock
• Anaphylactic reaction
• Anaphylaxis

Excludes1 (never code together)

• anaphylactic reaction or shock due to adverse effect of correct medicinal substance properly administered (T88.6)
• anaphylactic reaction or shock due to adverse food reaction (T78.0-)
• anaphylactic reaction or shock due to serum (T80.5-)

Applies from T78 Adverse effects, not elsewhere classified

Excludes2 (not included here)

• complications of surgical and medical care NEC (T80-T88)

7th character note

• The appropriate 7th character is to be added to each code from category T78

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Code annotations containing back-references to T78.2

Back-references to T78.2

• Type 1 Excludes: R57 Shock, not elsewhere classified ("anaphylactic shock NOS (T78.2)")
• Use Additional: T63.4 Toxic effect of venom of other arthropods ("code, if applicable, for anaphylactic shock (T78.2)")
• Type 1 Excludes: T79.4 Traumatic shock ("anaphylactic shock NOS (T78.2)")
• Type 1 Excludes: T80.5 Anaphylactic reaction due to serum ("allergic reaction or shock NOS (T78.2)")
• Type 1 Excludes: T80.5 Anaphylactic reaction due to serum ("anaphylactic reaction or shock NOS (T78.2)")
• Type 1 Excludes: T81.1 Postprocedural shock ("anaphylactic shock NOS (T78.2)")

Back-references to T78

• Type 1 Excludes: T75 Other and unspecified effects of other external causes ("adverse effects NEC (T78.-)")

Diagnosis Index entries for T78.2

• Allergy, allergic (reaction) (to) › anaphylactic reaction or shock
• Allergy, allergic (reaction) (to) › shock (anaphylactic)
• Shock › anaphylactic

Nearby codes

• T78.129S Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified, sequela
• T78.19 Other adverse food reactions, not elsewhere classified
• T78.19XA Other adverse food reactions, not elsewhere classified, initial encounter
• T78.19XD Other adverse food reactions, not elsewhere classified, subsequent encounter
• T78.19XS Other adverse food reactions, not elsewhere classified, sequela
• T78.2 Anaphylactic shock, unspecified (this code)
• T78.2XXA Anaphylactic shock, unspecified, initial encounter
• T78.2XXD Anaphylactic shock, unspecified, subsequent encounter
• T78.2XXS Anaphylactic shock, unspecified, sequela
• T78.3 Angioneurotic edema
• T78.3XXA Angioneurotic edema, initial encounter