Bone Growth Stimulators: Electrical (Invasive), Ultrasound - (0084)

Cigna covers ultrasound bone growth stimulation (HCPCS E0760) as an adjunct to closed reduction/immobilization for acute closed distal radius and tibial diaphyseal fractures, certain high‑risk closed fractures, and for fracture or stress‑fracture nonunions, and covers invasive non‑spinal electrical stimulators (CPT 20975) for established nonunions of long bones and carpal/tarsal bones, while excluding fresh fractures, most prophylactic/high‑risk uses, toe/sesamoid/avulsion/osteochondral fractures, displaced/malaligned fractures, synovial pseudoarthrosis, gaps >1 cm (or >½ bone diameter), and other specified nonindications. Key requirements: nonunion/stress‑fracture nonunion must be ≥3 months from injury/identification with at least two imaging sets ≥90 days apart (and ≥90 days of failed conservative care for stress fractures), fracture gap ≤1 cm, documentation of closed reduction/cast or surgical use as applicable, exclusion of malignancy/osteomyelitis, patient skeletally mature and not pregnant/nursing, and correct billing with HCPCS E0760 or CPT 20975.