Pnctr w fb of right thumb w/o damage to nail, sequela

This code signifies a puncture wound to the right thumb that has an embedded foreign object. Importantly, the injury does not involve damage to the fingernail or nail bed. The "S" at the end indicates that this code is for a sequela, meaning it describes a complication or condition arising as a direct result of an initial injury that has already healed or is in its late stages.

Apply this code when documenting a patient presenting with a persistent issue, such as chronic pain, infection, or restricted movement, directly attributable to a previously sustained puncture wound with a foreign body in the right thumb. This is appropriate for follow-up encounters after the initial acute injury has been treated.

• Ensure the medical record clearly documents the foreign body and the absence of nail damage.
• Verify that the encounter is for a sequela, not the initial acute injury or an active, ongoing acute treatment phase.
• Always code the specific type of foreign body if known, using an additional external cause code (e.g., W45.- for foreign body entering through skin).