M00.121: Pneumococcal arthritis, right elbow
M00.121, pneumococcal arthritis, right elbow, is listed as a covered diagnosis in 6 Medicare billing and coding articles that apply to 9 HCPCS Level II codes, including U0002 (2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19)…), U0001 (Cdc 2019 novel coronavirus (2019-ncov) real-time rt-pcr…), G0283 (Electrical stimulation (unattended), to one or more areas…). The articles come from 4 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with M00.121 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| U0002 | 2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19), any technique, multiple types or subtypes (includes all targets), non-cdc | Carrier judgment | — | 4 |
| U0001 | Cdc 2019 novel coronavirus (2019-ncov) real-time rt-pcr diagnostic panel | Carrier judgment | — | 4 |
| G0283 | Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care | Carrier judgment | — | 2 |
| G0152 | Services performed by a qualified occupational therapist in the home health or hospice setting, each 15 minutes | Carrier judgment | — | 1 |
| G0158 | Services performed by a qualified occupational therapist assistant in the home health or hospice setting, each 15 minutes | Carrier judgment | — | 1 |
| G0160 | Services performed by a qualified occupational therapist, in the home health setting, in the establishment or delivery of a safe and effective occupational therapy maintenance program, each 15 minutes | Carrier judgment | — | 1 |
| G2169 | Services performed by an occupational therapist assistant in the home health setting in the delivery of a safe and effective occupational therapy maintenance program, each 15 minutes | Carrier judgment | — | 1 |
| G0281 | Electrical stimulation, (unattended), to one or more areas, for chronic stage iii and stage iv pressure ulcers, arterial ulcers, diabetic ulcers, and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care, as part of a therapy plan of care | Carrier judgment | — | 1 |
| G0329 | Electromagnetic therapy, to one or more areas for chronic stage iii and stage iv pressure ulcers, arterial ulcers, diabetic ulcers and venous stasis ulcers not demonstrating measurable signs of healing after 30 days of conventional care as part of a therapy plan of care | Carrier judgment | — | 1 |
Medicare policy articles listing M00.121
- A58710: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (Palmetto GBA (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A58720: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A58761: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A58747: Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L38988, L39001, L39038, L39044
- A53057: Billing and Coding: Home Health Occupational Therapy (Palmetto GBA (HHH MAC); 5 Level II codes). LCD with the same title: L34560
- A53064: Billing and Coding: Outpatient Occupational Therapy (Palmetto GBA (MAC - Part A); 3 Level II codes). LCD with the same title: L34427
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other M00 diagnoses (Pyogenic arthritis)
- M00.122 — Pneumococcal arthritis, left elbow
- M00.129 — Pneumococcal arthritis, unspecified elbow
- M00.10 — Pneumococcal arthritis, unspecified joint
- M00.111 — Pneumococcal arthritis, right shoulder
- M00.112 — Pneumococcal arthritis, left shoulder
- M00.119 — Pneumococcal arthritis, unspecified shoulder
- M00.131 — Pneumococcal arthritis, right wrist
- M00.132 — Pneumococcal arthritis, left wrist
- M00.139 — Pneumococcal arthritis, unspecified wrist
- M00.141 — Pneumococcal arthritis, right hand
- M00.142 — Pneumococcal arthritis, left hand
- M00.149 — Pneumococcal arthritis, unspecified hand
- M00.151 — Pneumococcal arthritis, right hip
- M00.152 — Pneumococcal arthritis, left hip
- M00.159 — Pneumococcal arthritis, unspecified hip
- M00.161 — Pneumococcal arthritis, right knee
- M00.162 — Pneumococcal arthritis, left knee
- M00.169 — Pneumococcal arthritis, unspecified knee
- M00.171 — Pneumococcal arthritis, right ankle and foot
- M00.172 — Pneumococcal arthritis, left ankle and foot
- M00.179 — Pneumococcal arthritis, unspecified ankle and foot
- M00.18 — Pneumococcal arthritis, vertebrae
- M00.00 — Staphylococcal arthritis, unspecified joint
- M00.011 — Staphylococcal arthritis, right shoulder
- M00.012 — Staphylococcal arthritis, left shoulder
- M00.019 — Staphylococcal arthritis, unspecified shoulder
- M00.021 — Staphylococcal arthritis, right elbow
- M00.022 — Staphylococcal arthritis, left elbow
- M00.029 — Staphylococcal arthritis, unspecified elbow
- M00.031 — Staphylococcal arthritis, right wrist
Frequently asked questions
Does Medicare cover M00.121 (Pneumococcal arthritis, right elbow)?
Medicare covers items and services, not diagnoses. 6 Medicare billing and coding articles list M00.121 as a covered diagnosis for 9 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 M00.121?
The Level II codes from the policies most specific to this diagnosis are U0002 (2019-ncov coronavirus, sars-cov-2/2019-ncov (covid-19)…, 4 articles); U0001 (Cdc 2019 novel coronavirus (2019-ncov) real-time rt-pcr…, 4 articles); G0283 (Electrical stimulation (unattended), to one or more areas…, 2 articles); G0152 (Services performed by a qualified occupational therapist…, 1 article); G0158 (Services performed by a qualified occupational therapist…, 1 article). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list M00.121?
A58710 (Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing); A58720 (Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing); A58761 (Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing), and 3 more articles.
What is ICD-10-CM code M00.121?
M00.121 is the ICD-10-CM code for pneumococcal arthritis, right elbow, in category M00 (Pyogenic arthritis), chapter 13: Diseases of the musculoskeletal system and connective tissue.
Next steps
- Run a reimbursement report for a device billed under U0002
- Watch U0002 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for U0002
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 13: Diseases of the musculoskeletal system and connective tissue · All diagnoses · HCPCS lookup