ICD-10-CM 2027 diagnosis code

X79Intentional self-harm by blunt object

Not billable — use a more specific code

X79 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About X79

X79 is the ICD-10-CM diagnosis code for intentional self-harm by blunt object. It belongs to block X71-X83 (intentional self-harm) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: X79.XXXA (initial encounter), X79.XXXD (subsequent encounter) and X79.XXXS (sequela).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under X79

Notes that apply from higher levels

Instructions written at a parent level also apply to X79.

Broader instructions also apply from X71-X83 Intentional self-harm and Chapter 20: External causes of morbidity.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to X79.

Code history

2016
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2021
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2023
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2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about X79

Is X79 billable?: No. X79 is a header code. Report one of its more specific subcodes instead.