ICD-10-CM Codes Browse (Tabular) Diagnostic External Drug Neoplasm

T43.636 – Underdosing of methylphenidate

Coding Notes

Active

Non-billable / Non-specific, not valid for HIPAA-covered transactions

Child Codes

T43.636A

Underdosing of methylphenidate, initial encounter

T43.636D

Underdosing of methylphenidate, subsequent encounter

T43.636S

Underdosing of methylphenidate, sequela

Sibling Codes

T43.631

Poisoning by methylphenidate, accidental (unintentional)

T43.632

Poisoning by methylphenidate, intentional self-harm

T43.633

Poisoning by methylphenidate, assault

T43.634

Poisoning by methylphenidate, undetermined

T43.635

Adverse effect of methylphenidate

Parent Sibling Codes

T43.60

Poisoning by, adverse effect of and underdosing of unspecified psychostimulant

T43.61

Poisoning by, adverse effect of and underdosing of caffeine

T43.62

Poisoning by, adverse effect of and underdosing of amphetamines

T43.63

Poisoning by, adverse effect of and underdosing of methylphenidate

T43.64

Poisoning by ecstasy

T43.69

Poisoning by, adverse effect of and underdosing of other psychostimulants

Codes with Same Suffix

S62.636

Displaced fracture of distal phalanx of right little finger

S63.636

Sprain of interphalangeal joint of right little finger

View in Tabular

Code	Title
S00-T88	Injury, poisoning and certain other consequences of external causes (S00-T88)
T36-T50	Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
T43	Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
T43.6	Poisoning by, adverse effect of and underdosing of psychostimulants
T43.63	Poisoning by, adverse effect of and underdosing of methylphenidate
T43.636	Underdosing of methylphenidate