Medicare Priced Your Prior Auth at $22.14
CMS wants prior authorization on eight more botulinum toxin codes starting July 1, 2027, and the proposed rule prints its own cost model. Here are the codes, the arithmetic, and the lines the model leaves out.
When CMS built the hospital outpatient prior authorization list in November 2019, it picked five service categories: blepharoplasty, rhinoplasty, panniculectomy, vein ablation, and botulinum toxin injection. Four of the five sat close to the cosmetic line, and the botulinum codes it chose were the two closest to it, 64612 for blepharospasm and 64615 for chronic migraine.
The eight codes CMS proposes to add are cervical dystonia, spasmodic dysphonia, sialorrhea, and limb and trunk spasticity.
That is a different program than the one built in 2019, and it starts on July 1, 2027 if the CY2027 OPPS/ASC proposed rule finalizes as written. Comments close August 31.
The Eight Codes
Section XIX of CMS-1850-P adds these to the existing Botulinum Toxin Injection category at 42 CFR 419.83(a)(2):
- 64611: parotid and submandibular salivary glands, bilateral
- 64616: neck muscles, unilateral (cervical dystonia, spasmodic torticollis)
- 64617: larynx, unilateral, percutaneous (spasmodic dysphonia)
- 64642 and 64644: one extremity, 1 to 4 muscles and 5 or more
- 64646 and 64647: trunk, 1 to 5 muscles and 6 or more
- J0589: daxibotulinumtoxinA-lanm, per unit
J0589 is housekeeping. The other four toxins have been on the list since 2020 and this one simply catches up.
The rest is a real expansion into therapeutic neurology and PM&R. If you run a hospital-based spasticity clinic, a movement disorders program, or a voice center, every Medicare fee-for-service injection you do in the outpatient department needs a provisionally affirmed request before it happens, or the MAC denies the claim.
One thing worth reading twice: 64643 and 64645, the add-on codes for each additional extremity, appear in neither Table 76 nor Table 77. A bilateral upper-limb case bills 64642 plus 64643, and as proposed only the base code carries the requirement. CMS asks specifically for comment on "the potential for unintended clinical consequences," and a code pair where half the service needs authorization is a fair thing to raise.
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