Insert for congenital or atypical traumatic amputee, silicone gel, elastomeric or equal, for use with or without locking mechanism, initial only (for other than initial, use code l5673 or l5679) addition to lower extremity, below knee/above knee, custom fabricated socket
This is the 2007 version of HCPCS L5681 - please refer to the 2016 HCPCS code set for the latest version.