Pain Medicine Billing & Coding Guide
Trigger point, facet/MBB, ESI, RFA, intrathecal pumps. NCCI bundling and modifier 50/RT/LT discipline.
Common Pain Medicine CPT Codes
Ranked by claim frequency, with current MPFS work RVUs and global periods.
| Code | Description | Work RVU | Total RVU | Global |
|---|---|---|---|---|
| 64483 | Njx aa&/strd tfrm epi l/s 1 | 1.85 | 7.93 | 000 |
| 64484 | Njx aa&/strd tfrm epi l/s ea | 0.98 | 3.52 | ZZZ |
| 64490 | Inj paravert f jnt c/t 1 lev | 1.77 | 6.14 | 000 |
| 64491 | Inj paravert f jnt c/t 2 lev | 1.13 | 3.05 | ZZZ |
| 64492 | Inj paravert f jnt c/t 3 lev | 1.13 | 3.06 | ZZZ |
| 64493 | Inj paravert f jnt l/s 1 lev | 1.48 | 5.70 | 000 |
| 64494 | Inj paravert f jnt l/s 2 lev | 0.98 | 2.87 | ZZZ |
| 64495 | Inj paravert f jnt l/s 3 lev | 0.98 | 2.96 | ZZZ |
| 62323 | Njx interlaminar lmbr/sac | 1.76 | 8.18 | 000 |
| 62325 | Njx interlaminar crv/thrc | 2.15 | 7.94 | 000 |
| 64635 | Destroy lumb/sac facet jnt | 3.24 | 13.92 | 010 |
| 64636 | Destroy l/s facet jnt addl | 1.13 | 7.53 | ZZZ |
| 64633 | Destroy cerv/thor facet jnt | 3.24 | 13.74 | 010 |
| 64634 | Destroy c/th facet jnt addl | 1.29 | 7.98 | ZZZ |
| 27096 | Inject sacroiliac joint | 1.44 | 5.26 | 000 |
| 20610 | Drain/inj joint/bursa w/o us | 0.77 | 2.06 | 000 |
| 20611 | Drain/inj joint/bursa w/us | 1.07 | 3.12 | 000 |
| 64400 | Njx aa&/strd trigeminal nrv | 0.73 | 3.65 | 000 |
| 64405 | Njx aa&/strd gr ocpl nrv | 0.92 | 2.36 | 000 |
| 64450 | Njx aa&/strd other pn/branch | 0.73 | 2.42 | 000 |
What Pain Medicine practices are leaving on the table
High-value services that consistently get under-billed across the specialty. Each one is rooted in current 2026 fee schedule and policy updates.
Multi-level billing: Each additional spinal level is a separate add-on code. 3-level facet injection = 64493 + 64494 + 64495. Many practices only bill one code. Revenue per additional level: $80-120.
Bilateral modifier: Bilateral facet injections or bilateral transforaminal epidurals = 150% of unilateral rate. A bilateral 3-level facet injection = 64493-50 + 64494-50 + 64495-50. Revenue increase: $300-500 per procedure.
Fluoroscopy (77003): Separately billable with interlaminar epidurals (62322/62323) and SI joint injections (27096). Adds $40-60 per procedure. NOT separately billable with transforaminal (it's included).
Neurolysis vs diagnostic: Neurolytic procedures (64635/64636) pay 3-4x more than diagnostic injections (64493-64495). After 2 successful diagnostic blocks, convert to neurolysis.
Joint injections in-office: 20610 (large joint) + J3301 (triamcinolone) = $80-120 per injection. High patient demand, minimal time.
Medication billing: Bill J-codes for injected medications separately. J1030 (methylprednisolone), J3301 (triamcinolone), J1885 (ketorolac). Check payer-specific NDC requirements.
Code pairs that auto-bundle to CO-97
From the National Correct Coding Initiative for Pain Medicine. The rationale tells you when a modifier legitimately bypasses the edit and when it cannot.
64483 is first level transforaminal epidural, 64484 is each additional level. Max 2 add-ons typically. Example: L4-L5, L5-S1 = 64483 + 64484.
64493 is first level facet injection, 64494 is second level, 64495 is third level. One code per level. Bilateral = modifier 50.
Interlaminar epidural (62323) bundles with transforaminal (64483) on same date. Cannot bill both approaches on same day.
Fluoroscopy (77003) is INCLUDED in transforaminal epidural (64483). Do NOT bill 77003 separately with 64483.
Fluoroscopy (77003) IS separately billable with interlaminar epidural (62323). This is a common exception to the fluoroscopy bundling rules.
Neurolysis (64635) bundles with diagnostic injection (64493) on same date. Cannot do diagnostic and neurolytic at same level on same date.
Modifier Guidance for Pain Medicine
When each modifier legitimately applies in this specialty, with denial-pattern context and audit-defense documentation.
Bilateral — required for bilateral facet injections or bilateral transforaminal epidurals. Payment = 150% of unilateral rate. Document bilateral procedure in op note.
Laterality — used instead of 50 when payer requires individual claims for each side. Some payers reject modifier 50 and want LT/RT submitted as separate line items.
Separate level/structure — used for multi-level procedures at different spinal levels. Each level must be documented separately.
Repeat procedure by different physician — when patient sees different pain physician for repeat injection. Document why different physician.
Repeat procedure by same physician — repeat injection same physician, same day. Uncommon but possible (initial injection inadequate, re-injection needed).
Documentation requirements
What needs to live in the encounter note for these codes to survive a payer audit.
- Injection procedures: Document indication (diagnosis, failed conservative treatment, duration of symptoms), informed consent, monitored anesthesia, fluoroscopic guidance with contrast confirmation, medication injected (name, concentration, volume), levels treated, and patient tolerance.
- Diagnostic blocks: Document pre-procedure pain score, medication and volume, post-procedure pain score at 30 min and 2 hours, percentage of pain relief (must be 80%+ for neurolysis qualification).
- Neurolysis: Document 2 prior diagnostic blocks with 80%+ relief, dates of prior blocks, why neurolysis is indicated, RF probe temperature and duration, levels treated bilaterally or unilaterally.
- Conservative treatment failure: Document PT dates and duration, medications tried (with side effects), activity modifications, and functional limitation despite treatment.
OIG and audit triggers in Pain Medicine
Patterns that show up in OIG Work Plans, RAC audits, and CERT improper payment reviews. Build internal compliance checks around these.
Fluoroscopy bundling: 77003 is included in transforaminal epidurals (64483/64484) but IS separately billable with interlaminar epidurals (62322/62323). Know the difference.
Diagnostic + neurolytic same day: You CANNOT perform a diagnostic medial branch block and neurolysis at the same level on the same date. They must be separate encounters.
Auth not obtained: #1 cause of pain management denials. Nearly every commercial payer requires prior auth for spinal injections. Build auth checking into your scheduling workflow.
Insufficient diagnostic block documentation: Neurolysis requires 2 diagnostic blocks with 80%+ pain relief. If the diagnostic block notes don't document percentage relief, the neurolysis will be denied.
Too many levels: Most payers limit to 2-3 levels per session. Billing 4+ levels = automatic denial. Split across multiple sessions if needed.
Missing conservative treatment documentation: Payers require 4-6 weeks of conservative treatment (PT, medications) before approving injections. If this isn't in the chart, the auth and the claim will be denied.
Payer-specific billing notes
Where the major payers diverge from generic Medicare rules in Pain Medicine.
ME Medicare +
LCD policies vary by MAC. Most MACs require: diagnostic medial branch block before neurolysis, 80%+ pain relief from diagnostic block, and 2 separate diagnostic blocks at least 2 weeks apart. Fluoroscopy guidance documentation required.
UN UnitedHealthcare +
Prior auth required for ALL spinal injections. Limit 3 injection series per year per region. Requires 6 weeks conservative treatment before first injection. No more than 2 levels per session.
AE Aetna +
Pre-cert required. Uses Aetna Clinical Policy Bulletins (CPBs). Requires 4-6 weeks conservative treatment. Limits epidural injections to 3/year. Facet neurolysis requires 2 diagnostic blocks with 80%+ relief.
CI Cigna +
Auth required. Uses Cigna coverage policies. Similar to UHC limits. Requires pain management referral from PCP for some plans. Denies repeat injections within 2 weeks.
WO Workers Comp +
State-specific guidelines. Many states follow ODG (Official Disability Guidelines) or ACOEM guidelines. Treatment plans must be approved. IME/peer review common.
Standard Pain Medicine coding workflow
1. Verify prior auth BEFORE the procedure. 2. Document all levels and laterality in op note. 3. Select base code for first level. 4. Add-on code for each additional level. 5. Apply modifier 50 for bilateral or LT/RT per payer preference. 6. Determine if fluoroscopy (77003) is separately billable (yes for interlaminar, no for transforaminal). 7. Bill J-codes for medications injected. 8. Match ICD-10 to specific level/laterality (M54.41 = lumbago with sciatica, right side). 9. Track injection frequency per patient to avoid payer limits.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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