M1046 – Functional status measured by the oxford knee score (oks) at one year (9 to 15 months) postoperatively was less than 37 or the knee injury and osteoarthritis outcome score joint replacement (koos, jr.) was less than 71 postoperatively

HCPCS Level II code · M codes: Medical Services and Quality Measures

Active code Carrier judgment

HCPCS codeM1046
Long description
Functional status measured by the oxford knee score (oks) at one year (9 to 15 months) postoperatively was less than 37 or the knee injury and osteoarthritis outcome score joint replacement (koos, jr.) was less than 71 postoperatively
Short description
Fs oks 9-15mo < 37 < 71
Pricing indicator
00 Not separately priced by Part B (bundled, not covered or Part A only)
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
Z2 Undefined codes
Added
January 1, 2019
Last change
January 1, 2021 – No change

Frequently asked questions

What is HCPCS code M1046?

M1046 is a HCPCS Level II code for functional status measured by the oxford knee score (oks) at one year (9 to 15 months) postoperatively was less than 37 or the knee injury and osteoarthritis outcome score joint replacement (koos, jr.) was less than 71 postoperatively.

Does Medicare cover M1046?

The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby M codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.