For CPT codes 64492 and 64495, the need for a three-level procedure may be considered under unique circumstances and with sufficient documentation of medical necessity on appeal.
The KX modifier should be appended to the line for all diagnostic injections. In most cases the KX modifier will only be used for the two initial diagnostic injections. LCD A57787 . Also, the diagnoses list has changed to determine medical necessity , M54.5 nor M54.2 are acceptable DX codes for these injections . M47.812 -M47.817 or M47.892 - M47.897 as well as some additional codes. M48.12 -M48.17 M71.30 & M71.38 CPT codes 64490 through 64494 will be limited to no more than four (4) sessions, per region, per rolling 12 months, CPT code 64490 through 64494 with the KX modifier will be limited to no more than four (4) sessions, per region,
per rolling 12 months.