S46.821D vs S46.829D

S46.821D (Laceration of other muscles, fascia and tendons at shoulder and upper arm level, right arm, subsequent encounter) compared with S46.829D (Laceration of other muscles, fascia and tendons at shoulder and upper arm level, unspecified arm, subsequent encounter), from the official CMS tabular data. S46.821D and S46.829D code the same condition on opposite sides. MedCoder-derived

Relationship

Review

Laterality relationship

S46.821D

Right

Laceration of other muscles, fascia and tendons at shoulder and upper arm level, right arm, subsequent encounter

↔

S46.829D

Unspecified

Laceration of other muscles, fascia and tendons at shoulder and upper arm level, unspecified arm, subsequent encounter

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. S46.821D and S46.829D 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

	S46.821DLaceration of other muscles, fascia and tendons at shoulder and upper arm level, right arm, subsequent encounter	S46.829DLaceration of other muscles, fascia and tendons at shoulder and upper arm level, unspecified arm, subsequent encounter
Billing status	Billable	Billable
Classification	S00-T88 — Injury, poisoning and certain other consequences of external causes	S00-T88 — Injury, poisoning and certain other consequences of external causes
Definition	Laceration of other muscles, fascia and tendons at shoulder and upper arm level, right arm, subsequent encounter is a billable ICD-10-CM diagnosis code (S46.821D).	Laceration of other muscles, fascia and tendons at shoulder and upper arm level, unspecified arm, subsequent encounter is a billable ICD-10-CM diagnosis code (S46.829D).
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

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