Box 12: Patient or authorized signature
By Dr. Daniel Turner, DC · Reviewed September 2, 2026
What goes in Box 12 of the CMS-1500?
The patient’s authorization to release medical information for claim processing, usually satisfied by SIGNATURE ON FILE backed by a signed release kept in the chart.
What does Box 12 mean for chiropractic billing?
Signature on file only means something if the signature actually is on file. A current release captured at intake, stored in the chart, and refreshed per office policy is what stands behind those four words in an audit.
The mistakes that turn this box into denials
- ✗SOF printed with no release actually captured
- ✗Releases that predate the current episode by many years with no refresh policy
How Cervica fills Box 12
Cervica generates the CMS-1500 and its electronic 837P equivalent from the chart and the payer's own rules: identifiers from the verified insurance record, modifiers and codes per payer, and pre submission scrubbing that flags exactly the mistakes listed above before a claim leaves the building.
Related boxes
- →Box 13 · Insured signature, assignment of benefits
General information for billing teams, not billing advice for any individual claim. The NUCC's 1500 Claim Form instructions and each payer's companion guides control.