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Diagnostic Codes - Line 21 on CMS 1500

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Alice Scott:
Question:
Hi again! I'm just wondering whether Diagnostic Codes, Line 21 on CMS 1500 are to be exclusively ICD 10 codes or are DSM IV codes also accepted?
Thank you, Carol

Answer:
Hi Carol,

You can use either ICD or DSM codes in box 21, as long as the codes are recognized by the individual insurance carrier that you are billing.
 
Thanks,
Michele

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