Y63.6
Underdosing and nonadministration of necessary drug, medicament or biological substance
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 1 never code together
Instructional notes 3
Y62-Y84block
Includes
- complications of medical devices
- surgical and medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
V00-Y99chapter
Notes
- This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.S00-T88
Index entries leading here 3
Alongside this code 8 same parent — Y63
Y63.0 Excess amount of bld or oth fluid given dur tranfs or infusn Y63.1 Incorrect dilution of fluid used during infusion Y63.2 Overdose of radiation given during therapy Y63.3 Inadvertent expsr of patient to radiation during med care Y63.4 Failure in dosage in electroshock or insulin-shock therapy Y63.5 Inappropriate temperature in local application and packing Y63.8 Failure in dosage during other surgical and medical care Y63.9 Failure in dosage during unsp surgical and medical care
Medications 3
2 Chemical and Drug Induced Liver Injury drugs 3319 Drug-Related Side Effects and Adverse Reactions drugs 1 Chemical and Drug Induced Liver Injury, Chronic drugs
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.