Right-sided sciatica: pain radiating along the sciatic nerve pathway on the right side, from the lower back through the right buttock and down the right leg.

Documentation tips

What should appear in the chart to support M54.31.

Source · Editorial brief grounded in 6 cited references ↓

• Explicitly document laterality by name — 'right-sided' — in the assessment; do not rely on the HPI alone to establish side for coding purposes.
• Record straight leg raise (SLR) test result on the right side; a positive right SLR supports clinical validation of M54.31 over a symptom-only code.
• Note the radiation pattern: pain, numbness, tingling, or weakness tracking from the lower back into the right buttock, thigh, and/or below the right knee.
• If low back pain coexists with right sciatica, document whether lumbago is a separate, concurrent finding — this drives the choice between M54.31 and M54.41.
• When imaging is referenced, summarize key findings (disc herniation level, foraminal narrowing, nerve root involvement) and link them to the clinical diagnosis; if imaging confirms disc disorder as the cause, M51.1- replaces M54.31.
• Document prior conservative care history (PT, NSAIDs, chiropractic) when coding encounters that support interventional procedures — payer medical necessity review often requires this for ESI authorization.

Related CPT procedures

Procedure codes commonly billed with M54.31. Linking the right diagnosis to the right procedure is what establishes medical necessity.

Source · CMS LCDs · AAOS specialty guidance · claims-pattern analysis

Common coding pitfalls

The recurring mistakes coders make with M54.31 and adjacent codes.

Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓

• Using non-billable M54.3 or M54.30 when the note clearly documents right-side involvement — always code to M54.31 when laterality is established.
• Coding M54.31 alongside M54.41 (lumbago with sciatica, right side) — these are mutually exclusive; use M54.41 when low back pain and right sciatica are both documented as the primary complaint.
• Applying M54.31 when the documented cause is an intervertebral disc disorder — disc-caused sciatica belongs in M51.1-, not M54.31, per the Excludes1 instruction at M54.3.
• Coding M54.31 with G57.0 (lesion of sciatic nerve) — Excludes1 prohibits using both codes for the same encounter.
• Assigning M54.31 for bilateral sciatica without choosing the appropriate laterality codes — if both sides are documented, code M54.31 and M54.32 separately; there is no single bilateral code in this subcategory.

Clinical context

Source · Editorial summary grounded in 6 cited references ↓

Sibling codes

Other billable codes under M54.3 (laterality / anatomic variants).