T49.5X6
Underdosing of ophthalmological drugs and preparations
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 2 never code together
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 4
T49code
Includes
- poisoning by, adverse effect of and underdosing of glucocorticoids, topically used
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 2
Alongside this code 5 same parent — T49.5X
T49.5X1 Poisoning by opth drugs and preparations, accidental category T49.5X2 Poisoning by opth drugs and preparations, self-harm category T49.5X3 Poisoning by opth drugs and preparations, assault category T49.5X4 Poisoning by opth drugs and preparations, undetermined category T49.5X5 Adverse effect of ophthalmological drugs and preparations category
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.