S21.9

Header — not billable

Open wound of unspecified part of thorax

The ICD-10 code for open wound of unspecified part of thorax is S21.9.

S21.9 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.

Clinical notes

Also known as

Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.

Open wound of thoracic wall NOS

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
•This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

S21.9

Clinical notes

Also known as

Documentation support

Child codes under S21.9

Related codes in this category