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T78

Non-billable

Adverse effects, not elsewhere classified

T78 is the ICD-10-CM code for Adverse effects, not elsewhere classified. It is a non-billable category code — use a more specific child code such as T78.0 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Subcodes
6
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Excludes2 — not included here

  • •complications of surgical and medical care NEC (T80-T88)

Frequently asked questions

What is ICD-10 code T78?
T78 is the ICD-10-CM code for "Adverse effects, not elsewhere classified". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T78 a billable code?
No — T78 is a non-billable header code. Use a more specific child code (such as T78.0) for billing.
What are the subcodes of T78?
T78 has 6 more specific child codes, including T78.0, T78.1, T78.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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