T50.A9
Poisoning by, adverse effect of and underdosing of other bacterial vaccines
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 3
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 filed at null
No alphabetic index entry points at this code.
Alongside this code 2 same parent — T50.A
Subordinate codes 6
T50.A91 Poisoning by oth bacterial vaccines, accidental T50.A92 Poisoning by other bacterial vaccines, intentional self-harm T50.A93 Poisoning by other bacterial vaccines, assault T50.A94 Poisoning by other bacterial vaccines, undetermined T50.A95 Adverse effect of other bacterial vaccines T50.A96 Underdosing of other bacterial vaccines
Medications 2
946 Bacterial Infections and Mycoses drugs 3319 Drug-Related Side Effects and Adverse Reactions 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.