os trigonum

could I use 29894 for arthroscopic excison of os trigonum ankle?

re: os trigonum

Excision of os trigonum would be coded as CPT® 28120 (partial excision
[craterization, saucerization, sequestrectomy, or diaphysectomy] bone [e.g., osteomyelitis or bossing]; talus or calcaneus).
There is not a direct cross to arthroscopic technique (may have to use unlisted or query payer)