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

T43.636A – Underdosing of methylphenidate, initial encounter

Coding Notes

Active

Billable, valid for HIPAA-covered transactions

GEM Conversion to ICD-9 CM

NoDx

Fs: 11000

MDC / MS-DRG Reference

DRG 951

OTHER FACTORS INFLUENCING HEALTH STATUS

Sibling Codes

T43.636D

Underdosing of methylphenidate, subsequent encounter

T43.636S

Underdosing of methylphenidate, sequela

Parent 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

T43.636

Underdosing of methylphenidate

Codes with Same Suffix

S62.636A

Displaced fracture of distal phalanx of right little finger, initial encounter for closed fracture

S63.636A

Sprain of interphalangeal joint of right little finger, initial encounter