T45.2X6 ICD-10-CM Code: Underdosing of vitamins

Underdosing of vitamins is a non-billable ICD-10-CM category code (T45.2X6). A more specific billable subcode must be selected for claims submission. Includes: adverse effect of correct substance properly administered; poisoning by overdose of substance; poisoning by wrong substance given or taken in error; underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed. Excludes1 (not coded here): vitamin deficiencies (E50-E56); toxic reaction to local anesthesia in pregnancy (O29.3-). Excludes2 (not included here): poisoning by, adverse effect of and underdosing of nicotinic acid (derivatives) (T46.7); poisoning by, adverse effect of and underdosing of iron (T45.4); poisoning by, adverse effect of and underdosing of vitamin K (T45.7); abuse and dependence of psychoactive substances (F10-F19); abuse of non-dependence-producing substances (F55.-); immunodeficiency due to drugs (D84.821); drug reaction and poisoning affecting newborn (P00-P96); pathological drug intoxication (inebriation) (F10-F19). Code first: , for adverse effects, the nature of the adverse effect, such as:; adverse effect NOS (T88.7); aspirin gastritis (K29.-); blood disorders (D56-D76); contact dermatitis (L23-L25); dermatitis due to substances taken internally (L27.-); nephropathy (N14.0-N14.2). Use additional code: code(s) to specify:; manifestations of poisoning; underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9); underdosing of medication regimen (Z91.12-, Z91.13-). 7th character: The appropriate 7th character is to be added to each code from category T45.