Adverse effect used from therapeutic use.
Use an additional code from E849 to indicate the place of occurrence for injuries and poisoning, and don’t code E849.9 if the place of occurrence not stated.
Rules For Poisoning Codes:-
1st list the poisoning code. 2nd code the condition. 3rd E-Code, how the poison occurred.
Rules For Adverse Effect Codes:-
1st code the condition. 2nd E-Code {adverse effect/ therapeutic use}, how the poison occurred.
E-Codes are listed in 5 Categories:
1. Accident:- Accidental overdose of drugs, wrong substances given or taken.
2. Therapeutic use/Adverse Effect:- A correct substance properly administered in therapeutic dosage as the external cause of adverse effect.{When the substance used as prescribed}
3. Suicide attempt: – Instances in which self-inflicted injuries or poisoning are involved.
4. Assault: – Injury or poisoning inflicted by another person with the intent to injure or kill.
5. Undetermined: – When the intent of the poisoning or injury can’t be determined whether it was intentional or accidental.
EXAMPLES:-
1. Supraventricular premature heartbeats secondary to use of digitalis{Drugs}
Codes:- Px: Supraventricular premature heart beats [condition]- 427.61
Sx: digitalis – E942.1 [Therapeutic use]
Px: Primary Sx: Secondary
2. Dry mouth due to taking Phenobarbital
Codes: – Px: Dry mouth- 527.7
Sx: Phenobarbital- E937.0 [Therapeutic use-adverse effect]
3. Parkinsonism due to use of haloperidol [drugs]
Codes: – Px: Parkinsonism – 332.1
Sx: Haloperidol- E939.2 [Therapeutic use]
4. Supraventricular tachycardia due to digoxin.
Codes: – Px: Supraventricular tachycardia- 427.0
Sx: digoxin – E942.1 [Therapeutic use]
5. convulsion due to darvon
Codes:- Px: Convulsion – 780.39
Sx: Darvon- E-935.8 [Therapeutic use]
ACCIDENT CASE:-
1. Convulsions due to accidental overdose of darvon
Codes:- 1st code the poisoning darvon- 965.8
Then code the condition Convulsions – 780.39
Then E-Code accidental overdose of darvon- E850.8
SUICIDE ATTEMPT:-
1. Cerebral anoxia due to barbiturate overdose suicide attempt.
Codes:- 1st code the poisoning barbiturate- 967.0
Then code the condition cerebral anoxia- 348.1
Then E-Code suicide attempt- E950.1
2. Coma due to overdose of Phenobarbital.
Codes:- 1st code the poisoning Phenobarbital- 967.0
Then code the condition coma- 780.01
Then E-Code [unidentified] – E980.1
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