T21.1

Clinical notes

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.
• •If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
• •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.