Knowledge Base Article

True to form, the CMS announced the release of the Calendar Year (CY) 2023 Outpatient Prospective Payment System (OPPS) and Ambulatory Surgical Center (ASC) Payment System proposed rule late last Friday July 16th. This week we review the proposed changes to the Inpatient Only (IPO) list.

CMS once again reminds providers in this proposed rule that “Designation of a service as inpatient only does not preclude the service from being furnished in a hospital outpatient setting but means that Medicare will not make payment for the service if it is furnished to a Medicare beneficiary in the hospital outpatient setting (65 FR 18443). Conversely, the absence of a procedure from the list should not be interpreted as identifying that procedure as appropriately performed only in the hospital outpatient setting (70 FR 68696).”

Before reviewing proposals, here is a quick look back at the “flip flopping” of CMS over the past two calendar years. In CY 2021, CMS removed 298 musculoskeletal-related services from the IPO List and finalized the elimination of the list over three years. In CY 2022, CMS did an about face and finalized the following changes:

• The IPO list will not be eliminated over three years,
• Most procedures removed from the IPO list in CY 2021 were added back to the list for CY 2022, and
• The five longstanding criteria for determining whether a service or procedure should be removed from the IPO list was codified in regulation text.

Calendar Year 2023 Proposed Procedures for Removal from the IPO List

CMS is proposing to remove ten procedures from the IPO list.

CPT code 16036 (Escharotomy; each additional incision (list separately in addition to code for primary procedure)). This code is an add-on code typically billed with primary procedure CPT 10635 (escharotomy; initial incision) which was removed from the IPO list in CY 2007.

CPT code 22632 (Arthrodesis, posterior interbody technique, including laminectomy and/or discectomy to prepare interspace (other than for decompression), single interspace; each additional interspace (list separately in addition to code for primary procedure)). This code is an add-on code typically billed with primary procedure CPT 22630 (Arthrodesis, posterior interbody technique, including laminectomy and/or discectomy to prepare interspace (other than for decompression), single interspace; lumbar), which was removed from the IPO list in CY 2021. Note, this code was removed from the IPO list in CY 2021 and replaced back on the list for CY 2022.

The remaining eight procedures proposed for removal from the IPO list are all maxillofacial procedures removed from the IPO list in CY 2021 and replaced back on the list for CY 2022:

• CPT code 21141 (Reconstruction midface, lefort I; single piece, segment movement in any direction (e.g., for long face syndrome), without bone graft).
• CPT code 21142 (Reconstruction midface, lefort I; 2 pieces, segment movement in any direction, without bone graft).
• CPT code 21143 (Reconstruction midface, lefort I; 3 or more pieces, segment movement in any direction, without bone graft).
• CPT code 21194 (Reconstruction of mandibular rami, horizontal, vertical, C, or L osteotomy; with bone graft (includes obtaining graft)).
• CPT code 21196 (Reconstruction of mandibular rami and/or body, sagittal split; with internal rigid fixation).
• CPT code 21347 (Open treatment of nasomaxillary complex fracture (lefort II type); requiring multiple open approaches).
• CPT code 21366 (Open treatment of complicated (e.g., comminuted or involving cranial nerve foramina) fracture(s) of malar area, including zygomatic arch and malar tripod; with bone grafting (includes obtaining graft)); and
• CPT code 21422 (Open treatment of palatal or maxillary fracture (lefort I type);).

Calendar Year 2023 Proposed Additions to the IPO List

CMS has proposed the addition of eight newly created codes by the AMA CPT Editorial Panel to the IPO list for CY 2023:

• 157X1 (Implantation of absorbable mesh or other prosthesis for delayed closure of defect(s) (i.e., external genitalia, perineum, abdominal wall) due to soft tissue infection or trauma,
• 228XX (Total disc arthroplasty (artificial disc), anterior approach, including discectomy to prepare interspace (other than for decompression); second interspace, lumbar (List separately in addition to code for primary procedure),
• 49X06 (Repair of anterior abdominal hernia(s) (i.e., epigastric, incisional, ventral, umbilical, spigelian), any approach (i.e., open, laparoscopic, robotic), initial, including placement of mesh or other prosthesis when performed, total length of defect(s); greater than 10 cm, incarcerated or strangulated),
• 49X10 (Repair of anterior abdominal hernia(s) (i.e., epigastric, incisional, ventral, umbilical, spigelian), any approach (i.e., open, laparoscopic, robotic), recurrent, including placement of mesh or other prosthesis when performed, total length of defect(s); 3 cm to 10 cm, incarcerated or strangulated),
• 49X11 (Repair of anterior abdominal hernia(s) (i.e., epigastric, incisional, ventral, umbilical, spigelian), any approach (i.e., open, laparoscopic, robotic), recurrent, including placement of mesh or other prosthesis when performed, total length of defect(s); greater than 10 cm, reducible,
• 49X12 (Repair of anterior abdominal hernia(s) (i.e., epigastric, incisional, ventral, umbilical, spigelian), any approach (i.e., open, laparoscopic, robotic), recurrent, including placement of mesh or other prosthesis when performed, total length of defect(s); greater than 10 cm, Incarcerated or strangulated,
• 49X13, (Repair of parastomal hernia, any approach (i.e., open, laparoscopic, robotic), initial or recurrent, including placement of mesh or other prosthesis, when performed; reducible), and
• 49X14 (Repair of parastomal hernia, any approach (i.e., open, laparoscopic, robotic), initial or recurrent, including placement of mesh or other prosthesis, when performed; incarcerated or strangulated).

All proposed changes to the IPO list, including the CPT code, longer descriptor, proposed action (deletion or addition), proposed status indicator and for proposed deletions the proposed APC assignment are listed in Table 46 of the proposed rule.

CMS is accepting comments on the proposed rule through September 13, 2022.

Resources

CY 2023 OPPS Proposed Rule

• CMS Press Release: https://www.cms.gov/newsroom/press-releases/cms-proposes-rule-advance-health-equity-improve-access-care-and-promote-competition-and-transparency
• CMS Fact Sheet: https://www.cms.gov/newsroom/fact-sheets/cy-2023-medicare-hospital-outpatient-prospective-payment-system-and-ambulatory-surgical-center
• Proposed Rule: https://www.federalregister.gov/public-inspection/2022-15372/medicare-program-hospital-outpatient-prospective-payment-and-ambulatory-surgical-center-payment