Lumbar Discectomy (Microdiscectomy)

CPT 63030
Approach Open
Add-on / Variant CPTs
  • 63035 — Laminotomy/discectomy, each additional interspace (add-on)
  • 63042 — Laminotomy, reexploration with discectomy
Preoperative Diagnosis:

Right [left] L[4-5 / 5-S1] disc herniation with [radiculopathy / neurogenic claudication / cauda equina syndrome], confirmed on MRI

Postoperative Diagnosis:

Same

Procedure Performed:

Right [left] L[X–X] microdiscectomy [/ bilateral decompression]

Attending Surgeon:

[Attending name], MD/DO

First Assistant:

[Resident/PA name]

Anesthesia:

General endotracheal

Indications:

The patient is a [age]-year-old [male/female] with right [left] [L4/L5 / L5/S1] radiculopathy refractory to [X weeks] of conservative management including physical therapy and epidural steroid injections. MRI demonstrates [posterior / posterolateral / foraminal] disc herniation at [L4-5 / L5-S1] compressing the [L5 / S1] nerve root. The risks, benefits, and alternatives were discussed and informed consent was obtained.

Findings:

Intraoperatively, a [large / moderate] [posterolateral / central / foraminal] disc herniation was identified at [L4-5 / L5-S1] compressing the [L5 / S1] nerve root. Following discectomy, the nerve root was decompressed and freely mobile. No epidural hematoma or instability was encountered.

Description of Procedure:

The patient was positioned prone on a [Wilson frame / Jackson table] with the abdomen free. Fluoroscopy was used to confirm the operative level by needle localization prior to incision. [L4-5 / L5-S1] confirmed.

A [2–3]-cm midline incision was made centered over [L4-5 / L5-S1]. The lumbodorsal fascia was incised. The paraspinal muscles were subperiosteally elevated and retracted with a self-retaining retractor. The [L4-5 / L5-S1] interlaminar space was identified. Under loupe magnification [/ operating microscope], the ligamentum flavum was incised and removed with Kerrison rongeurs. A medial [L4 / L5] laminotomy was performed as needed.

The nerve root was identified and gently retracted medially with a nerve root retractor. The disc herniation was identified in the lateral recess / subligamentous position. The posterior longitudinal ligament was incised with a [#15 blade / angled curette]. The disc fragment was removed with pituitary rongeurs. A [3-mm] curette was used to probe the disc space: [residual loose fragments were removed / no further fragments identified]. Hemostasis was achieved with bipolar cautery and [Gelfoam / Surgicel].

Following decompression, the nerve root was freely mobile with no residual compression. The wound was irrigated. Fascial closure was performed with [0-Vicryl]. Skin was closed with [2-0 Vicryl / 3-0 Monocryl].

Complications:

None

Specimens:

Disc material sent to pathology

Estimated Blood Loss:

[X] mL

Drains:

None

Disposition:

The patient was taken to the PACU in stable condition. Neurological status was checked in the recovery room. Ambulation was initiated on the same day. The patient was discharged home [/ on postoperative day 1].

Epic SmartPhrase Version 
PREOPERATIVE DIAGNOSIS: Right/Left L*** disc herniation with radiculopathy
POSTOPERATIVE DIAGNOSIS: Same
PROCEDURE PERFORMED: Right/Left L*** microdiscectomy
ATTENDING: ***, MD/DO
ASSISTANT: ***
ANESTHESIA: General endotracheal

INDICATIONS: .PTAGE-year-old .PTSEX with L*** radiculopathy, failed conservative management *** weeks. MRI: *** herniation at L***, *** root compression. Consent obtained.

FINDINGS: *** posterolateral/central disc herniation at L***, compressing *** root. Post-discectomy: root freely mobile.

PROCEDURE:
Prone on Wilson frame/Jackson table. Fluoroscopic level confirmation: L*** confirmed. *** cm midline incision. Fascia incised. Paraspinals elevated. Interlaminar space identified. Ligamentum flavum removed, Kerrison. [*** laminotomy.] Scope/loupes. Nerve root identified, gently retracted medially. Herniation identified ***. PLL incised. Fragment removed with pituitary rongeurs. Disc space probed — no residual. Hemostasis bipolar/Gelfoam. Root freely mobile. Irrigated. Fascia 0-Vicryl. Skin closed.

EBL: *** mL
SPECIMENS: Disc to pathology
COMPLICATIONS: None
DISPOSITION: Neuro check PACU. Ambulated same day. DC home.

Signed: .ME, .MYDEGREE
.TODAY
Variants

Cauda Equina Syndrome: Emergency Decompression

Given acute cauda equina syndrome (saddle anesthesia, bowel/bladder dysfunction), emergent surgical decompression was performed. A more extensive laminectomy was performed to allow bilateral nerve root decompression. A central disc herniation was encountered and removed. Post-operatively, neurologic function was reassessed. Cauda equina syndrome from disc herniation requires emergency surgery. Delays beyond 24–48 hours are associated with permanent sphincter dysfunction. Document the time from symptom onset to decompression in the operative note.

Bilateral Decompression: Over-the-Top Technique

For central stenosis with bilateral symptoms, a unilateral approach with over-the-top bilateral decompression was performed. The ipsilateral laminotomy was extended and the operating table was tilted to allow retraction of the dural sac and decompression of the contralateral lateral recess and foramen. This technique preserves the midline ligamentous structures (supraspinous, interspinous) and avoids bilateral facet removal, reducing instability risk compared to full laminectomy.

Charting Tips
  • Document fluoroscopic level confirmation before incision. Wrong-level surgery is one of the most common surgical never events in spine surgery. The operative note must explicitly state that fluoroscopy confirmed the operative level before skin incision.
  • Document the extent of laminotomy and facet joint preservation. Removing more than 50% of a facet joint creates instability requiring fusion. Document how much facet was removed and confirm that >50% was preserved on each side.
  • Document post-decompression nerve root mobility. After discectomy, explicitly state that the nerve root was 'freely mobile without residual compression.' This confirms adequate decompression and establishes the endpoint of the operation.
Billing Tips
  • Bill 63030 for single-level lumbar microdiscectomy (11.70 wRVU, 90-day global). Bill 63040 for single-level cervical laminotomy with discectomy (19.80 wRVU). Add 63035 (+5.54 wRVU) for each additional lumbar level.
  • Minimally invasive tubular discectomy uses the same codes. Approach does not change the CPT. Document minimally invasive technique, tube diameter, and level(s) treated.
  • 90-day global period: physical therapy, activity restrictions, and routine follow-up are bundled. Epidural steroid injection for persistent radiculopathy after discectomy is separately billable by pain management.
  • If fusion is added at the same setting (e.g., for instability), bill fusion codes separately with modifier -51. The addition of fusion substantially increases the wRVU, so document the indication for combined decompression and fusion.
  • Document preoperative MRI correlation with intraoperative findings: level confirmed by fluoroscopy, nerve root identified and decompressed, disc fragment description (size, location, extruded vs. contained). These details are essential for medicolegal defense.