Laceration of msl/tnd of back wall of thorax, sequela

This code signifies a past injury involving a tear or cut to the muscles and/or tendons located in the posterior aspect of the chest wall, and it is now being reported for a residual condition or late effect of that initial injury. This could include persistent pain, weakness, limited range of motion, or other long-term complications stemming from the original laceration.

Use this code when documenting a patient presenting with ongoing symptoms or complications directly attributable to a previously sustained laceration of the back wall thoracic muscles and tendons. This applies to follow-up visits where the primary focus is managing the long-term sequelae, not the acute injury itself.

• Always use in conjunction with an external cause code (V00-Y99) to describe the circumstances of the original injury, if known.
• Ensure documentation clearly links the current symptoms to the prior laceration as a sequela.
• Do not use for acute lacerations; instead, refer to the acute injury codes within the S21.2-S21.3 range.