How do I complete a CMS 1500 claim form?


Editorial team Published on

You can complete a CMS 1500 Claim Form by filling out the standardized 33-box paper or electronic document using official guidelines from the National Uniform Claim Committee.

Key Sections and Fields

  • Carrier Section (Top): Enter the payer’s name, claims address, or electronic Payer ID.
  • Boxes 1–13 (Patient & Insured Information):
    • Box 1 & 1a: Select the type of health insurance (Medicare, Medicaid, Group Health, etc.) and input the patient's member ID number.
    • Boxes 2–5: Enter the patient's full name (Last, First, Middle Initial), birth date (MM/DD/YYYY format), sex, and address.
    • Boxes 6–13: Indicate the patient's relationship to the insured, secondary insurance details (if applicable), and note "Signature on File" (SOF) for patient and insured authorizations.
  • Boxes 14–33 (Physician & Supplier Information):
    • Boxes 14–16: Enter dates for current illness, injury, or inability to work.
    • Boxes 17–17b: List the referring provider's name and National Provider Identifier (NPI).
    • Box 21: Enter ICD-10 diagnosis codes using indicator "0".
    • Boxes 24–24j: Report individual service lines, including dates of service, place of service codes (e.g., 11 for office), CPT/HCPCS procedure codes, charges, units, and the rendering provider's NPI.
    • Boxes 25–33: Provide the provider's Tax ID (EIN or SSN), total charges, signature/date (Box 31), service facility location, and billing provider details with NPI.

Best Practices to Prevent Rejections

  • Use Correct Paper: If submitting by paper, use an original red/white CMS-1500 (02/12) form; photocopies or black-and-white versions are generally rejected.
  • Type in Black Ink: Type or print cleanly using black ink only, and avoid using correction fluid or highlighters.
  • Omit Special Characters: Do not use commas, dollar signs, or decimal points unless specifically required by your software formatting or clearinghouse specifications.