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Injury, poisoning and certain other consequences of external causes (S00-T88)
›
Other and unspecified effects of external causes (T66-T78)
›
Adverse effects, not elsewhere classified
›
T78.40A
T78.40A
✓ Billable
Allergy, unspecified, initial encounter
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Code Hierarchy
┌
19
Injury, poisoning and certain other consequences of external causes (S00-T88)
├
T66-T78
Other and unspecified effects of external causes (T66-T78)
├
T78
Adverse effects, not elsewhere classified
└
T78.40A
Allergy, unspecified, initial encounter
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