Every specialty bills differently — different code sets, different denial patterns, different payer rules. These guides cover what generalist billing advice misses, specialty by specialty.
Time-based CPT codes, parity law leverage, authorization-heavy payer behavior, and ABA therapy's unique billing structure.
90837 · 90791 · H2019 · 97153CDT codes (not CPT), annual maximums, narrative documentation, missing-tooth clauses, and DSO-scale operations.
D2740 · D4341 · D6010 · D0220HCPCS coding, same/similar denials, CMN documentation, rental-vs-purchase logic, and the highest denial rates of any specialty.
E0601 · K0823 · A4253 · L3806Interventional procedure coding, prior-auth-intensive payer policies, bilateral and multiple-level rules, and medical necessity documentation.
64483 · 62323 · 64635 · 20610E&M leveling under the 2021+ guidelines, AWV and preventive-vs-problem visits, chronic care management, and high-volume clean-claim discipline.
99213 · 99214 · G0439 · 99490Global surgical periods, modifier mastery (-24, -25, -58, -78), implant and hardware billing, and workers' comp coordination.
27447 · 29881 · 20680 · 99024More specialties are in the pipeline — cardiology, physical therapy, radiology, oncology, urgent care, and OB/GYN are next. Request yours.
Denials, eligibility, AR, and credentialing work the same way in every specialty. Start with the core guides: