S23.421⚠ Requires 7th Character

Sprain of chondrosternal joint

⚠ 7th Character Required

The appropriate 7th character is to be added to each code from category S23

This code is not valid for billing without a 7th character. Append one of the following to S23.421:

Ainitial encounterS23.421ADsubsequent encounterS23.421DSsequelaS23.421S

Sub-codes of S23.421(3)

S23.421 is a non-billable header. Select a sub-code to bill.

S23.421ASprain of chondrosternal joint, initial encounter✓ BillableS23.421DSprain of chondrosternal joint, subsequent encounter✓ BillableS23.421SSprain of chondrosternal joint, sequela✓ Billable

Also Indexed As(ICD-10-CM Alphabetic Index)

These clinical terms, synonyms, and manifestations all map to S23.421 in the official ICD-10-CM Alphabetic Index.

Sprain (joint) (ligament), chondrosternalSprain (joint) (ligament), sternum, chondrosternal joint

Code Hierarchy

┌19Injury, poisoning and certain other consequences of external causes (S00-T88)├S20-S29Injuries to the thorax (S20-S29)├S23Dislocation and sprain of joints and ligaments of thorax
└S23.421Sprain of chondrosternal joint

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