G8958 HCPCS Level II code: Assessment of adequacy of volume management not documented, reason not given
G8958 is the HCPCS code for “Assessment of adequacy of volume management not documented, reason not given” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G8958Assessment of adequacy of volume management not documented, reason not given
Short description: Assess vol mgmt not doc
HCPCS · United States
Medicare details
The indicators CMS publishes with G8958 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Medical care
- BETOS category
- Specialist - psychiatry
- Added
- Jan 1, 2013
Where G8958 sits
- 1G codesProcedures and professional services
- 2Active code G8958Assessment of adequacy of volume management not documented, reason not given
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code G8958 mean?
G8958 is the HCPCS code for “Assessment of adequacy of volume management not documented, reason not given” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G8958?
CMS lists G8958’s Medicare coverage as “Carrier judgment” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside G8958
All G codesG8951Pre-hypertensive or hypertensive blood pressure reading documented, indicated follow-up not documented, documentation the patient is not eligibleG8952Elevated or hypertensive blood pressure reading documented, indicated follow-up not documented, reason not givenG8953All quality actions for the applicable measures in the oncology measures group have been performed for this patientG8955Most recent assessment of adequacy of volume management documentedG8956Patient receiving maintenance hemodialysis in an outpatient dialysis facilityG8957Patient not receiving maintenance hemodialysis in an outpatient dialysis facilityG8959Clinician treating major depressive disorder communicates to clinician treating comorbid conditionG8960Clinician treating major depressive disorder did not communicate to clinician treating comorbid condition, reason not givenG8961Cardiac stress imaging test primarily performed on low-risk surgery patient for preoperative evaluation within 30 days preceding this surgeryG8962Cardiac stress imaging test performed on patient for any reason including those who did not have low risk surgery or test that was performed more than 30 days preceding low risk…G8963Cardiac stress imaging performed primarily for monitoring of asymptomatic patient who had pci within 2 yearsG8964Cardiac stress imaging test performed primarily for any other reason than monitoring of asymptomatic patient who had pci within 2 years (e.g., symptomatic patient, patient…