S46.992 vs S46.999

S46.992 (Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, left arm) compared with S46.999 (Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified arm), from the official CMS tabular data. S46.992 and S46.999 code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S46.992

Left

Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, left arm

↔

S46.999

Unspecified

Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified arm

Same condition; these differ only in which side is documented.

These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.

Source: ICD-10-CM tabular list (laterality variant derived from the code title)

Can these codes be reported together?

Same condition, opposite side. S46.992 and S46.999 name the same condition on opposite sides of the body.

Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.

Side by side

	S46.992Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, left arm	S46.999Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified arm
Billing status	Non-billable header Report instead: S46.992A, S46.992D, S46.992S	Non-billable header Report instead: S46.999A, S46.999D, S46.999S
Classification	S00-T88 — Injury, poisoning and certain other consequences of external causes	S00-T88 — Injury, poisoning and certain other consequences of external causes
Definition	Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, left arm is a non-billable ICD-10-CM category code (S46.992).	Other injury of unspecified muscle, fascia and tendon at shoulder and upper arm level, unspecified arm is a non-billable ICD-10-CM category code (S46.999).
7th character	The appropriate 7th character is to be added to each code from category S46	The appropriate 7th character is to be added to each code from category S46
Includes	injuries of axilla injuries of scapular region	injuries of axilla injuries of scapular region

Edit this comparison Check a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources