X78.1XXS — Intentional self-harm by knife, sequela
Is X78.1XXS billable?
Yes — X78.1XXS is billable for FY2027. X78.1XXS is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. X78.1XXS may be submitted for encounters from October 1, 2026 through September 30, 2027.
X78.1XXS at a glance
| Code | X78.1XXS |
|---|---|
| Description | Intentional self-harm by knife, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in X78.1XXS?
In X78.1XXS, the 7th character S means sequela. The 7th character is required for X78.1XXS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is X78.1XXS listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under X78.1, the nearest indexed parent of X78.1XXS. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Suicide, suicidal › cutting or piercing instrument › knife (attempted) (by)
- Contact › with › knife › suicide (accidental)
How long has X78.1XXS existed?
X78.1XXS has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.