CurrentCapital BluecrossPolicy MP 4.050

Facet Joint Injections and Medial Branch Blocks

Defines medical necessity, investigational indications, and coding for diagnostic and therapeutic facet joint injections and medial branch blocks for management of cervical and lumbar spine pain.

Policy Summary

PayerCapital Bluecross

PolicyFacet Joint Injections and Medial Branch Blocks

Policy CodePolicy MP 4.050

Change TypeNo material change

Effective DateMay 1, 2026

Next Review Date

Key ActionDocument validated patient-focused pain intensity assessments and record sequential successful diagnostic injection responses and radiofrequency denervation candidacy when applicable.

SourceLink

4maximum therapeutic facet joint sessions per spinal region in 12 months

3 monthsminimum duration of pain despite conservative therapy before initial diagnostic injection

2required sequential successful diagnostic blocks prior to therapeutic blocks

0213T-0218TUltrasound guidance procedure codes listed as investigational/not covered

Medical Necessity Criteria for Facet Joint Injections and Medial Branch Blocks

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Initial Diagnostic Facet Joint Injection/Medial Branch Block - Medically Necessary

May be considered medically necessary when ALL of the following are met:

ALL of the following

Pain (lumbar or cervical) lasting more than 3 months despite appropriate conservative treatment> 3 months
Conservative therapies include medications, physical treatments, integrative treatments, nutrition/weight loss/sleep hygiene
Procedure used as a diagnostic procedure to determine facet joint origin of pain

Second Diagnostic Facet Joint Injection/Medically Branch Block - Medically Necessary

A second diagnostic injection may be considered medically necessary when ALL of the following are met:

ALL of the following

Initial diagnostic injection was successful at relieving pain (see definition of successful block)
Successful block: a sustained meaningful reduction in pain; often defined as a 20-point improvement on a 0–100 VAS or a 50% improvement on a validated scale.
Second diagnostic injection will be administered at the same level(s) as the initial diagnostic block
Radiofrequency joint denervation is being considered

Therapeutic Facet Joint Injection/Medial Branch Block - Medically Necessary

Therapeutic injections may be considered medically necessary when ALL of the following are met:

ALL of the following

Documented successful response with 2 sequential diagnostic facet joint injections/medial branch blocks at the same level(s)2
Successful block: a sustained meaningful reduction in pain; often defined as a 20-point improvement on a 0–100 VAS or a 50% improvement on a validated scale.
Individual is not a candidate for radiofrequency joint denervation
For subsequent therapeutic blocks, there was a successful response to the prior therapeutic injection for at least 3 months duration>= 3 months

Utilization limit

Not Covered / Investigational

The following are considered investigational and not covered:

ANY of the following

Facet joint injection/medial branch block (diagnostic or therapeutic) for any indication other than those listed above
Ultrasound guidance for facet joint injections

Procedure and Diagnosis Codes

Investigational / Not Covered - Ultrasound guidance for facet joint injectionsCPT/HCPCSNot Covered

0213T	Ultrasound guidance (investigational per policy)
0214T	Ultrasound guidance (investigational per policy)
0215T	Ultrasound guidance (investigational per policy)
0216T	Ultrasound guidance (investigational per policy)
0217T	Ultrasound guidance (investigational per policy)
0218T	Ultrasound guidance (investigational per policy)

Covered when medically necessary - Facet joint / medial branch procedure codesCPTCovered

64490	Injection(s), diagnostic or therapeutic, anesthetic agent; first lumbar or sacral level (example interpretation - listed in policy)
64491	Injection(s), diagnostic or therapeutic; each additional level (listed in policy)
64492	Alternate code variant listed in policy
64493	Alternate code variant listed in policy
64494	Alternate code variant listed in policy
64495	Alternate code variant listed in policy

Associated ICD-10 Diagnosis Codes (examples listed)ICD-10

G54.1	Lumbosacral plexus disorders
G54.2	Cervical root disorders, not elsewhere classified
G54.3	Thoracic root disorders, not elsewhere classified
G54.4	Lumbosacral root disorders, not elsewhere classified
M08.1	Juvenile ankylosing spondylitis
M43.22	Fusion of spine, cervical region
M43.23	Fusion of spine, cervicothoracic region
M43.24	Fusion of spine, thoracic region
M43.25	Fusion of spine, thoracolumbar region
M43.26	Fusion of spine, lumbar region

1–10 of 190

1/19

Documentation, Billing and Denial Risks

Documentation Required

Pain assessment documentation

Document use of validated patient-focused pain intensity assessment scales (such as Numeric Rating Scale, Visual Analog Scale, Verbal Rating Scale, the Faces Pain Scale, or the Pain Thermometer) when determining levels of pain during management.

Documentation Required

Document successful diagnostic responses

If a second diagnostic block is planned, document that the initial diagnostic injection produced a successful pain-relieving response; also document two sequential successful diagnostic blocks at the same level(s) prior to proceeding with therapeutic injections.

Documentation Required

Document candidate status for radiofrequency denervation

Document that radiofrequency joint denervation was considered and that the individual is not a candidate for radiofrequency joint denervation when therapeutic facet joint injections/medial branch blocks are selected instead.

Denial Risk

Investigational services denial

Facet joint injections/medial branch blocks for indications not listed as medically necessary and ultrasound guidance for facet injections are investigational and not covered; claims for these services may be denied.

0213T
0214T
0215T
0216T
0217T
0218T

Clinical Context

Facet joint (intra-articular, IA) injections and medial branch blocks (MBB) are minimally invasive procedures used as diagnostic and therapeutic interventions for suspected facet-mediated neck and back pain. An IA facet joint injection places local anesthetic, with or without steroid, into the facet joint capsule to numb the joint; when the pain is substantially reduced after an appropriately performed IA injection, the facet joint can be identified as the likely pain source. Medial branch blocks target the medial branch nerves that supply the facet joint and may be used similarly to diagnose facet joint pain, though MBB can produce non-selective neural blockade because the medial branch is not encapsulated and nearby nerves may also be anesthetized, which can lead to false-positive results. Despite this limitation, MBB is an acceptable diagnostic test and is often the preferred prognostic test when lumbar facet radiofrequency ablation is being considered because it may be more predictive of success with neurolysis than IA injections. [[citations omitted]]

Defined Terms

Definitions

Successful blockA sustained meaningful reduction in pain; often defined as a 20-point improvement on a 0–100 VAS or a 50% improvement on a validated scale.

Facet joint (IA) injectionInjection of local anesthetic, with or without steroid, into the facet joint capsule to diagnose or treat facet-mediated pain.

Medial branch block (MBB)Injection targeting the medial branch nerves that innervate the facet joint; may produce non-selective blockade and false-positives but is an acceptable diagnostic test and is often preferred when considering radiofrequency ablation.

Policy Summary

PayerCapital Bluecross

PolicyFacet Joint Injections and Medial Branch Blocks

Policy CodePolicy MP 4.050

Change TypeNo material change

Effective DateMay 1, 2026

Next Review Date

Key ActionDocument validated patient-focused pain intensity assessments and record sequential successful diagnostic injection responses and radiofrequency denervation candidacy when applicable.

SourceLink

On This Page

OpenPayer

Facet Joint Injections and Medial Branch Blocks

Medical Necessity Criteria for Facet Joint Injections and Medial Branch Blocks

Procedure and Diagnosis Codes

Documentation, Billing and Denial Risks

Clinical Context

Defined Terms

At-a-Glance Policy Metrics

Facet Joint Injections and Medial Branch Blocks

Medical Necessity Criteria for Facet Joint Injections and Medial Branch Blocks

Procedure and Diagnosis Codes

Documentation, Billing and Denial Risks

Clinical Context

Defined Terms

At-a-Glance Policy Metrics

Policies to Read With This Document