Pain Management Billing Guide: 2026 CPT Codes, Modifiers and LCD Rules
Interventional pain claims are decided by details the procedure note either has or does not: the spinal region, the number of levels, which side, whether imaging and contrast were used, how much relief the last block gave, and whether anyone billed anesthesia. This guide gives the CPT code families for the common procedures, the 2026 NCCI bundling rules, the Florida Medicare coverage limits that decide medical necessity, and the modifiers that make the claim readable.
Rules are quoted from the Medicare NCCI Policy Manual (chapters II, IV and VIII, revised January 1, 2026) and First Coast Service Options’ local coverage determinations, which apply to Medicare Part B in Florida. Other Medicare contractors publish similar policies under different numbers, and commercial plans set their own. If you want someone to run the claims rather than a code reference, see our pain management billing services page. Other specialties are in our billing and coding guides.
Quick answers
- Imaging is inside the injection code for epidurals, transforaminals and facets; 77003 and 77012 are not added.
- Bilateral is one line with modifier 50 on a physician claim; unilateral lines need RT or LT.
- RFA is billed per joint, not per nerve.
- Florida Medicare wants two diagnostic blocks with at least 80% relief each before facet RFA.
- Sedation and anesthesia are rarely payable with facet injections and ESIs, and CMS has an approved audit topic on 01992.
- Count sessions per region per rolling 12 months: that is how every Florida limit is written.
What changed for 2026, and what is set for 2027
| Change | What CMS published | Why it matters in pain management |
|---|---|---|
| NCCI Policy Manual 2026 | Effective January 1, 2026 (CMS NCCI Policy Manual page) | Chapter VIII holds the spinal injection and imaging-guidance rules |
| CY 2026 conversion factors | $33.57 for qualifying APM participants and $33.40 for everyone else (CMS fact sheet, October 31, 2025) | Check which factor each physician is paid under |
| Efficiency adjustment | -2.5% on non-time-based services; time-based codes such as E/M are exempt (same fact sheet) | Injection and ablation codes are procedure codes, not time-based codes |
| Recovery Audit topic 0229 | Approved July 15, 2026: 01992 anesthesia claims denied on the same date as facet injections, facet denervation or ESIs (CMS RAC topic 0229) | An automated review across all A/B MACs; the anesthesia claim is the one that denies |
| First Coast facet LCD L33930 | New version effective for services on or after December 6, 2026 (LCD L33930) | Same 80% / two-block / two-RF-session structure; re-read it before December claims |
| CY 2027: same-day E/M and 0-day procedures | For a separately identifiable office/outpatient E/M on the same day as a 0-day global procedure, the higher-paid service is paid in full and the others at 80% (CMS fact sheet, November 4, 2026) | Effective January 1, 2027; check each injection code’s global indicator |
| CY 2027 conversion factors | $32.95 qualifying APM and $32.63 non-qualifying (same fact sheet) | Both factors fall from 2026 |
Spinal injection code families
| Procedure | Codes | How the code is chosen |
|---|---|---|
| Interlaminar or caudal epidural, single injection | 62320–62323 | Region (cervical/thoracic vs lumbar/sacral) and whether imaging guidance was used |
| Epidural with indwelling catheter | 62324–62327 | Same split, for continuous or intermittent infusion |
| Transforaminal epidural | 64479–64484 | 64479 cervical/thoracic and 64483 lumbar/sacral for the first level; 64480 and 64484 for each additional level; imaging included |
| Facet joint or medial branch injection | 64490–64495 | 64490–64492 cervical/thoracic, 64493–64495 lumbar/sacral: first, second and third-and-any-additional level; imaging included |
| Facet radiofrequency ablation | 64633–64636 | 64633 cervical/thoracic and 64635 lumbar/sacral for the first joint; 64634 and 64636 for each additional joint |
| Sacroiliac joint injection | 27096 | Injection with imaging guidance |
| Trigger point injection | 20552, 20553 | One or two muscles (20552) or three or more muscles (20553) |
| Joint or bursa injection | 20600–20611 | Joint size, and whether ultrasound guidance was used |
What the NCCI manual bundles into these codes
- Imaging guidance. 62321, 62323, 62325 and 62327 describe injections with fluoroscopic or CT guidance; 77003 and 77012 are included and not reported separately (ch. VIII §C.21). Fluoroscopy 76000 is not reported with spinal procedures unless a CPT instruction allows it (§C.20).
- Epidurals inside bigger spine surgery. 62320–62327 are included in the codes for more invasive spinal procedures (§C.17).
- Local anesthetic is part of the procedure. Trigger point and tendon injections (20526–20553) are not reported for the local anesthesia used to perform another procedure (ch. IV §C).
- One unit per joint. For 20600–20611, the unit of service is a joint and its surrounding bursae (ch. IV §H.7).
- Discography pain. Treating pain that follows discography (62290, 62291) with 62320–62323 is not separately reportable; it is in the global package (§C.33).
Facet joint interventions under Florida Medicare
First Coast’s LCD L33930, Facet Joint Interventions for Pain Management applies to Medicare Part B in Florida. The version in effect through December 5, 2026 and the version effective December 6, 2026 share these rules:
| Requirement | Rule |
|---|---|
| Who qualifies | Pain present for at least three months, with documented failure to respond to noninvasive conservative care |
| Diagnostic blocks | Intra-articular blocks are used as the diagnostic only when an MBB cannot be done because of documented anatomic restrictions. The confirmatory block needs at least 80% relief of the index pain and comes at least two weeks after the first |
| Before RFA | At least two medically necessary diagnostic MBBs, each with at least 80% relief |
| Repeat RFA | At least 50% improvement in pain for at least six months, or equivalent functional improvement |
| Frequency per spinal region, rolling 12 months | Up to four diagnostic sessions; up to four therapeutic injection sessions; up to two RF sessions |
| Levels | One or two levels per session per spinal region, unilateral or bilateral |
| Imaging | CT or fluoroscopic guidance required; ultrasound- and MRI-guided procedures are not reasonable and necessary |
| Therapeutic injections | Covered only with documentation of why the patient is not a candidate for RFA |
How First Coast wants facet claims coded
The companion billing article A57787 (revision 10, effective January 5, 2026) adds the claim-level rules:
- Bilateral at one level: one unit of the primary code with modifier 50. Unilateral lines need RT or LT; without the laterality modifier the line is rejected.
- Add-on levels: 64492 and 64495 cannot be reported more than once per day.
- RFA units: 64633–64636 are reported per joint, not per nerve.
- KX on diagnostic blocks: the KX modifier must be appended to every diagnostic injection line, and in most cases only the two initial diagnostic injections carry it. Aberrant KX use may trigger focused medical review.
- Non-thermal denervation: chemical, pulsed or low-grade thermal (below 80°C) denervation is not coded with 64633–64636; 64999 for it is non-covered.
- Pain scales: the record documents a pain or disability scale (for example NRS, VAS or ODI) so relief can be measured.
Epidural steroid injections under Florida Medicare
First Coast’s LCD L33906, Epidural Steroid Injections for Pain Management (revision effective April 9, 2026) sets the coverage test:
- Duration: pain for at least four weeks with failure of, or intolerance to, four weeks of noninvasive conservative care. Acute herpes zoster is the stated exception. Severity is measured on an objective scale at baseline and on the same scale at follow-up.
- Imaging and contrast: CT or fluoroscopy with contrast. Ultrasound without contrast only with a documented contrast allergy or pregnancy.
- Frequency: up to four sessions per spinal region in a rolling 12 months; a predetermined series is not reasonable and necessary.
- Levels: transforaminal up to two levels in one region per session; interlaminar and caudal one level per session, and bilateral interlaminar or caudal injections are not covered. One spinal region per session.
- Repeat injections: at least 50% improvement in pain lasting at least three months, or 50% improvement in function on the same scale. After a poor response, a repeat after 14 days may use a different approach, level or medication with the reason documented.
- Same session as other blocks: an ESI in the same session as other blocks, facet blocks included, is not reasonable and necessary, except an ESI with a facet synovial cyst procedure.
The billing article A56651 adds: report 64479–64484 unilateral on one line with one unit, bilateral on one line with modifier 50 (ASC claims use RT and LT on separate lines); only two total levels per session for the transforaminal codes; 62321 and 62323 one level per session and not bilateral; and films showing final needle position and contrast flow, in at least two views, kept for review.
Anesthesia and sedation with pain procedures
| Situation | Rule | Source |
|---|---|---|
| The physician doing the procedure also gives the anesthesia | With limited exceptions, Medicare does not pay the anesthesia separately; it is in the procedure payment | NCCI ch. II §A |
| Moderate sedation by the same physician (99151–99153) | Generally separately reportable under NCCI, but subject to medical necessity | NCCI ch. IV §C |
| Sedation, general anesthesia or MAC with facet injections | Not reasonable and necessary; claims reporting anesthesia with facet injections are denied. Case-by-case for RFA with documentation | LCD L33930, A57787 |
| Sedation or MAC with ESIs | Usually not reasonable and necessary; exceptions need the specific need documented, and oral anxiolytics usually suffice for needle phobia | LCD L33906 |
| 01992 on the same day as facet or ESI | Denied under an approved, automated Recovery Audit topic | RAC topic 0229 |
Modifier 25 and the E/M on injection day
The 2026 NCCI manual (ch. VIII §B) applies the global surgery rules: for a procedure with a 000 or 010 global period, E/M services the same day are generally included, and the decision to perform a minor procedure is part of the procedure. A significant, separately identifiable E/M unrelated to that decision is billable with modifier 25; different diagnoses are not required, and a new patient alone is not enough. A visit that only confirms the planned injection does not support 25; a visit that also evaluates a separate problem can, when the note documents that work separately.
Pain management modifier reference
| Modifier | Use it when | What it is asserting |
|---|---|---|
| 25 | A significant, separately identifiable E/M on the same day as a minor procedure | The visit addressed more than the decision to inject |
| 50 | The same procedure was done on both sides at the same level (physician claims) | One line, one unit, bilateral; NCCI ch. IV §H.6 |
| RT / LT | Unilateral procedures, and both sides on ASC claims | Which side; required by First Coast for facet lines |
| 59 / XS / XU | Bypassing an NCCI edit for a separate site or a distinct service | The edit does not apply because the work was genuinely separate |
| KX | Diagnostic facet injections under First Coast’s A57787 | The line is a diagnostic block within the coverage limits |
Common pain management denials and what causes them
| What the payer did | Usual cause | Rule behind it |
|---|---|---|
| Bundled 77003 or 77012 | Imaging billed with an epidural, transforaminal or facet code that already includes it | NCCI ch. VIII §C.21; CPT descriptors |
| Rejected a facet line | No RT, LT or 50 on the line | A57787 |
| Denied RFA | Fewer than two diagnostic blocks documented, relief under 80%, or a third RF session in 12 months | LCD L33930 |
| Denied an ESI | Fifth session in the region in 12 months, a bilateral interlaminar, no contrast, or prior relief not documented | LCD L33906 |
| Denied the anesthesia claim | 01992 or MAC billed with a facet injection or ESI | LCD L33930/L33906; RAC topic 0229 |
| Units cut on RFA | Units billed per nerve instead of per joint | A57787 |
| E/M denied with the injection | Modifier 25 on a visit that was the decision to inject | NCCI ch. VIII §B |
Appealing these with the procedure note, the block log and the imaging record attached is what our denial management service does. The American Society of Interventional Pain Physicians tracks payment rules for its members in its payment rules pages.
Sources
- Medicare NCCI Policy Manual 2026, Chapter VIII: Surgery, Nervous System (revision date January 1, 2026; read November 9, 2026)
- Medicare NCCI Policy Manual 2026, Chapter II: Anesthesia Services (revision date January 1, 2026)
- Medicare NCCI Policy Manual 2026, Chapter IV: Surgery, Musculoskeletal System (revision date January 1, 2026)
- First Coast Service Options, LCD L33930: Facet Joint Interventions for Pain Management (read November 9, 2026)
- First Coast, Billing and Coding article A57787: Facet Joint Interventions (R10, effective January 5, 2026)
- First Coast Service Options, LCD L33906: Epidural Steroid Injections for Pain Management (revision effective April 9, 2026)
- First Coast, Billing and Coding article A56651: Epidural Steroid Injections (R9, effective November 16, 2023)
- CMS Recovery Audit topic 0229: Anesthesia During Spine Pain Management Procedures (July 15, 2026)
- CMS fact sheet: CY 2026 Medicare Physician Fee Schedule final rule (CMS-1832-F) (October 31, 2025)
- CMS fact sheet: CY 2027 Medicare Physician Fee Schedule final rule (November 4, 2026)
- American Society of Interventional Pain Physicians, payment rules (read November 9, 2026)
CPT codes and descriptors are from the AMA CPT code set. This guide does not state fee amounts; check your Medicare contractor’s fee schedule and your payer contracts.
Frequently asked questions
Can 77003 be billed with an epidural steroid injection?
Not with the interlaminar or caudal epidural codes. The 2026 NCCI manual (chapter VIII §C.21) says 62321, 62323, 62325 and 62327 include fluoroscopic or CT guidance, so 77003 and 77012 are not reported separately. The transforaminal (64479–64484) and facet (64490–64495) descriptors also include imaging guidance.
How are bilateral facet injections billed?
On a physician claim, one line with one unit of the primary code and modifier 50. First Coast's billing article A57787 says the same, and requires RT or LT on unilateral lines; a line without the right laterality modifier is rejected. An ASC reports a bilateral procedure on two lines, RT and LT, one unit each.
How many medial branch blocks are needed before radiofrequency ablation?
Under First Coast LCD L33930, at least two medically necessary diagnostic medial branch blocks, each with at least 80% relief of the primary (index) pain, with the second at least two weeks after the first. Repeat RFA requires at least 50% improvement for at least six months, and no more than two RF sessions per spinal region in a rolling 12 months.
Is RFA billed per nerve or per joint?
Per joint. First Coast's billing article A57787 says 64633, 64634, 64635 and 64636 are reported per joint, not per nerve, even though two medial branches are lesioned for each facet joint. The add-on codes 64634 and 64636 report each additional joint level.
How many epidural steroid injections does Florida Medicare cover per year?
First Coast LCD L33906 allows up to four ESI sessions per spinal region in a rolling 12-month period. Transforaminal injections are limited to two levels per session; interlaminar and caudal injections to one level, and not bilateral. A repeat needs at least 50% improvement lasting at least three months, or documented functional improvement.
Can anesthesia be billed for a facet injection or ESI?
Generally no. First Coast's facet article says claims reporting anesthesia with facet injections will be denied, and both LCDs treat moderate or deep sedation, general anesthesia and MAC as not reasonable and necessary except in documented cases. CMS also approved a Recovery Audit topic denying 01992 on the same day as these procedures.
Can an epidural and a facet injection be done on the same day?
Not under First Coast's ESI policy. LCD L33906 says performing an epidural steroid injection in the same session as other blocks, including facet blocks, is not reasonable and necessary, with an exception for an ESI and a facet synovial cyst procedure in the same session. It also allows only one spinal region per session.
Does modifier 25 apply to an E/M on the same day as an injection?
Only when the E/M is significant, separately identifiable and unrelated to the decision to do the injection. NCCI says the decision to perform a minor procedure is included in the procedure, different diagnoses are not required, and a new patient alone does not justify the visit. From January 1, 2027 Medicare also reduces same-day E/M and 0-day global procedure pairs.
How many units of 20610 can be billed for one joint?
One. NCCI chapter IV §H.7 says the unit of service for the arthrocentesis family 20600–20611 is a joint and its surrounding bursae, so injecting the shoulder joint and two of its bursae is one unit of 20610 (or 20611 with ultrasound guidance and a permanent record).
Guides for other specialties are listed in our billing and coding guides.
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