S63.404 vs S63.405

S63.404 (Traumatic rupture of unspecified ligament of right ring finger at metacarpophalangeal and interphalangeal joint) compared with S63.405 (Traumatic rupture of unspecified ligament of left ring finger at metacarpophalangeal and interphalangeal joint), from the official CMS tabular data. S63.404 and S63.405 code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S63.404

Right

Traumatic rupture of unspecified ligament of right ring finger at metacarpophalangeal and interphalangeal joint

↔

S63.405

Left

Traumatic rupture of unspecified ligament of left ring finger at metacarpophalangeal and interphalangeal joint

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. S63.404 and S63.405 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

	S63.404Traumatic rupture of unspecified ligament of right ring finger at metacarpophalangeal and interphalangeal joint	S63.405Traumatic rupture of unspecified ligament of left ring finger at metacarpophalangeal and interphalangeal joint
Billing status	Non-billable header	Non-billable header
Classification	S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)	S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
Definition	Traumatic rupture of unspecified ligament of right ring finger at metacarpophalangeal and interphalangeal joint is a non-billable ICD-10-CM category code (S63.404).	Traumatic rupture of unspecified ligament of left ring finger at metacarpophalangeal and interphalangeal joint is a non-billable ICD-10-CM category code (S63.405).
7th character	The appropriate 7th character is to be added to each code from category S63	The appropriate 7th character is to be added to each code from category S63
Includes	avulsion of joint or ligament at wrist and hand level laceration of cartilage, joint or ligament at wrist and hand level sprain of cartilage, joint or ligament at wrist and hand level traumatic hemarthrosis of joint or ligament at wrist and hand level	avulsion of joint or ligament at wrist and hand level laceration of cartilage, joint or ligament at wrist and hand level sprain of cartilage, joint or ligament at wrist and hand level traumatic hemarthrosis of joint or ligament at wrist and hand level

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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