Spinal Fusion and Decompression (for New Mexico Only)
Act
by Oct 31, 2026
Effective date
Nov 1, 2026
Identified
Sep 2, 2026
Summary
UnitedHealthcare Community Plan of New Mexico revised its Spinal Fusion and Decompression policy for Medicaid beneficiaries, effective November 1, 2026. Key changes include: (1) updated clinical coverage criteria to reference a new InterQual® Client Defined custom lumbar decompression/fusion guideline, (2) added six new clinical definitions (Anticipated Instability Due to Procedure, Instability, Lumbar Spinal Decompression With Interbody Lumbar Spinal Fusion, Meyerding Classification System, Radiographic Dynamic Instability, and Unstable Grade I Degenerative Spondylolisthesis), and (3) clarified that staged multiple sessions for symptomatic multisite spinal pathology are unproven and not medically necessary when one session can address all sites. Four procedures remain unproven and non-covered: Dynamic Stabilization systems, Facet Joint Replacement, Isolated Facet Joint Fusion (with or without instrumentation), and Vertebral joint implants (e.g., MOTUS).
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01Billing team must update billing software and prior authorization workflows to reference the new InterQual® Client Defined CP: Procedures, Decompression +/- Fusion, Lumbar (Custom) - UHG criteria instead of the legacy InterQual® CP: Procedures, Decompression +/- Fusion, Lumbar guideline for all New Mexico Medicaid claims.
02Providers and clinical staff must familiarize themselves with the six new clinical definitions, particularly around Anticipated Instability Due to Procedure and Unstable Grade I Degenerative Spondylolisthesis, to ensure accurate documentation supporting medical necessity.
03Update prior authorization request templates to explicitly reference these new definitions and criteria.
04Configure billing system to deny or flag claims for staged multiple sessions when clinical documentation indicates one session can address all pathology sites.
05Ensure all spine surgery scheduling and billing staff are trained on the new policy before November 1, 2026.
If missed: Failure to implement these changes will result in claim denials for improperly authorized spinal fusion and decompression procedures in New Mexico Medicaid.
Original notice
Spinal Fusion and Decompression (for New Mexico Only)
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