AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2018 Issue 2; Ask the Editor

Excision of Synovial Cyst

A patient diagnosed with a left L4-L5 synovial cyst with degenerative joint disease was taken to the operating room for left laminectomy (L4-L5), with removal of synovial cyst. An incision was made overlying the levels between L4 and L5. The laminectomy included a significant amount of the lamina of L4, and a medial partial facetectomy was required. The synovial cyst was dissected away from the dura and root sleeve obtaining complete decompression. Next, the nerve root was decompressed into the foramen. What is the appropriate code assignment for the dissection of the synovial cyst? ...

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