Why Dermatology Practices Overbundle and Undercollect – 10 Hidden Billing Errors Reducing Revenue in 2026

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  Introduction: The Growing Revenue Challenges in Dermatology Why dermatology practices overbundle and undercollect has become an important financial concern in 2026 as dermatology providers face increasing payer scrutiny, reimbursement pressure, and coding complexity. Dermatology billing involves a wide range of procedures, including biopsies, lesion removals, Mohs surgery, cosmetic treatments, pathology services, and evaluation and management visits. Because many dermatology procedures occur during the same patient encounter, correct coding and modifier usage are essential for accurate reimbursement. However, many practices unintentionally overbundle services, meaning separately billable procedures are grouped together incorrectly. This leads to lower reimbursement, hidden revenue leakage, and declining collections over time. Without specialized dermatology billing services and advanced medical billing services , practices often struggle to identify these silent financial l...

Prior Authorization Exemption for Certain DMEPOS Items


On 4
th April 2022, CMS published a rule on “suspension of prior authorization requirements for orthoses prescribed and furnished urgently or under special circumstances”. Prior authorization helps Durable Medical Equipment, Prosthetics, Orthotics, and Supplies (DMEPOS) suppliers ensure that applicable Medicare coverage, payment, and coding rules are met before DMEPOS items are delivered. The prior authorization program helps to protect the Medicare Trust Fund from improper payments while ensuring that beneficiaries can receive the DMEPOS items they need in a timely manner.

CMS maintains a master list of DMEPOS items that requires either a face-to-face encounter and written order or prior authorization requirements. You will find the updated list here. Due to the need for certain patients to receive an orthoses item that may otherwise be subject to prior authorization when the two-day expedited review would delay care and risk the health or life of the beneficiary, CMS suspended prior authorization requirements for HCPCS codes L0648, L0650, L1832, L1833, and L1851 furnished under following circumstances:

  • Claims for these HCPCS codes that are billed using modifier ST will not undergo prior authorization and will instead be subject to 100% prepayment review.
  • For suppliers furnishing these items under a competitive bidding program exception (as described in 42 CFR 414.404(b)), claims billed with modifiers KV, J5, or J4 would convey that the DMEPOS item is needed immediately and therefore these modifiers will be accepted in addition to the ST modifier. Ten percent of claims submitted using the KV, J5, or J4 modifiers for HCPCS L0648, L0650, L1833, and L1851 will be subject to prepayment review.
Prior authorization helps DMEPOS suppliers ensure that applicable Medicare coverage, payment, and coding rules are met before DMEPOS items are delivered. MBC can help you to receive accurate insurance reimbursements for DME items including prior authorizations, Read Here: https://bit.ly/3Mow0ZZ. To know about our DME billing services, Contact us at info@ medicalbillersandcoders.com/ 888-357-3226

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