Will someone tell me if this should be coded as 20550 or 20551 please? My guess is 20551 since he does not state it is in the sheath but just wanted to get clarification. Thanks

Problem # 1: Dupuytren’s contracture, right (ICD10-M72.0)

discussed options. catching but not locking. some pain but not really restricting him at his point.
elected to do kenalog injection. area was prepped with betadine. 40mg of kenalog injected into nodularity in flexor tendon in mid palm.
tolerated well and reeval when necessary.