Interspace Between the Popliteal Artery and Capsule of the Posterior Knee (iPACK) Block

Question:

KZA, thank you for the information on the Coding Coach on the PENG block.  Do the same CPT codes apply to an interspace between the Popliteal Artery and Capsule of the posterior Knee (iPACK) block?

Answer:

While the Pericapsular Nerve Group (PENG) targets the anterior capsule of the hip, the iPACK block focuses on the posterior knee joint.

The creation of CPT codes 64466 – 64474 describes blocks performed in the fascial plane and distinguishes the fascial plane blocks from a nerve block.

CPT codes 64473 and 64474 are used for the infiltration of the interspace between the Popliteal Artery and the capsule (iPACK) block. The applicable code will depend on whether an injection or continuous infusion is performed.

• 64473 – Lower extremity fascial plane block, unilateral; by injection(s), including imaging guidance, when performed

• 64474 – Lower extremity fascial plane block, unilateral; by continuous infusion(s), including imaging guidance, when performed

*This response is based on the best information available as of 2/27/25.