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Doc/Coding tips

Billing and Coding Tips for Cataract Co-Management
Posted: March 9, 2018


  • Make sure your diagnosis matches the surgeon’s diagnosis
  • Make sure your CPT code matches the surgeon’s: 66984 for regular or 66982 for complex
  • Date of service is the “actual date of the surgery”
  • Box 33 should contain the optometrist’s practice, not the surgeon
  • In Box 17: list the surgeons name Box 17B: list the surgeons NPI#
  • Box 19: type in the following words and actual dates—- ASSUMED 00/00/0000; RELINQUISHED 00/00/0000 (this is the 90 day global period-can use to calculate your dates)
  • Box 24G: (days or units) Medicare replacements and commercial insurances will only accept “1” unit and you bill for the total dollar amount of the co-management period.

**Traditional Medicare (NGS) will only accept “90” units (or the actual number of days you co-managed the patient). In this situation you would divide the number of days you co-managed the patient by your total co-management fee and bill that dollar amount as a “Per-day” amount. Your states Medicare carrier may vary.

For example, you may bill one payer: Units = 1 & Fee = $300. And for Medicare you would bill: Units = 90 & Fee = $3.33


  • 1st eye CPT-66984 or 66982, then modifier LT or RT, then modifier 55 for co-managementt
  • 2nd eye CPT-66984 or 66982 if during the 90-day global of the 1st eye then add LT or RT and both of the following modifiers: 55 for co-management and 79 for an unrelated procedure or service by same physician during post op care.

If the 90-day global period is over before billing the 2nd eye, or you are only billing for one eye, then it gets coded like the 1st eye example above





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Updates Prior to 2018