T48.902
Poisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm
Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 5 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
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 5 same parent — T48.90
T48.901 Poisn by unsp agents primarily acting on the resp sys, acc category T48.903 Poisn by unsp agents prim acting on the resp sys, assault category T48.904 Poisn by unsp agents primarily acting on the resp sys, undet category T48.905 Adverse effect of unsp agents prim acting on the resp sys category T48.906 Underdosing of unsp agents primarily acting on the resp sys category
Subordinate codes 3
Medications 5
1 Mercury Poisoning, Nervous System drugs 1 Lead Poisoning, Nervous System drugs 16 Heavy Metal Poisoning, Nervous System drugs 1 Lead Poisoning, Nervous System, Childhood drugs 148 Autoimmune Diseases of the Nervous System 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.