Instruction Source: T78.41XA
Arthus phenomenon, initial encounter
Instruction Source: T78.41
Arthus phenomenon
Instruction Source: T78.4
Other and unspecified allergy
Excludes 1 (Mutually Exclusive)
- allergic diarrhea (K52.29)
- allergic gastroenteritis and colitis (K52.29)
- dermatitis (L23-L25, L27.-)
- food protein-induced enterocolitis syndrome (K52.21)
- food protein-induced enteropathy (K52.22)
- hay fever (J30.1)
- specified types of allergic reaction such as:
Instruction Source: T78
Adverse effects, not elsewhere classified
Excludes 2 (Not Included Here)
- complications of surgical and medical care NEC (T80-T88)
Instruction Source: T66-T78
Other and unspecified effects of external causes (T66-T78)
Instruction Source: S00-T88
Injury, poisoning and certain other consequences of external causes
Excludes 2 (Not Included Here)
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
Clinical Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code