ICD-10-CM · Spine

M48.36

Structural damage to one or more lumbar vertebrae caused by trauma, classified under other spondylopathies when the injury does not meet criteria for a discrete fracture code.

Verified May 8, 2026 · 7 sources ↓

Status: Billable
Chapter: 13
Related CPT: 14
Region: Spine

Drawn from CDCICD10DataAAPCCMSAAOS

Documentation tips

What should appear in the chart to support M48.36.

Source · Editorial brief grounded in 7 cited references ↓

Specify lumbar region explicitly in the note (L1–L5); generic 'low back' language does not confirm lumbar-region spondylopathy for coding purposes.
Document the traumatic mechanism — motor vehicle collision, fall from height, workplace injury — to justify the 'traumatic' qualifier over degenerative spondylopathy codes.
Include imaging findings (MRI, CT, or X-ray) that demonstrate vertebral structural changes such as ligamentous disruption, endplate injury, or instability without meeting discrete fracture criteria.
If a fracture IS identified on imaging, re-evaluate whether M48.5x (pathologic fracture) or an S-code (traumatic fracture) better captures the injury — M48.36 is not a fracture code.
For fusion pre-authorization, cite the CMS LCD/Article A56396 support for M48.36 as a covered diagnosis and include the operative or imaging report that confirms lumbar structural compromise.

Related CPT procedures

Procedure codes commonly billed with M48.36. Linking the right diagnosis to the right procedure is what establishes medical necessity.

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

22630 $1,510.72

Posterior interbody arthrodesis of a single lumbar interspace, including laminectomy and/or discectomy performed to prepare the interspace for fusion rather than for decompression.

22612 $1,467.64

Posterior or posterolateral lumbar arthrodesis of a single interspace, performed via a posterior approach with bone graft and typically pedicle screw fixation to achieve vertebral segment fusion.

22614 $349.37

Add-on code for each additional interspace treated by posterior or posterolateral arthrodesis beyond the first level billed with a primary fusion code.

22633 $1,700.11

Single-level lumbar arthrodesis combining posterior or posterolateral technique with posterior interbody technique, including laminectomy and/or discectomy sufficient to prepare the interspace — performed as one surgical session at one lumbar interspace.

22532 $1,732.17

Spinal fusion at a single thoracic vertebral segment using the lateral extracavitary approach, which provides a wide posterolateral corridor to the anterior and middle columns without entering the thoracic cavity. Includes minimal discectomy to prepare the interspace for fusion.

22533 $1,547.80

Spinal fusion of a lumbar vertebral segment performed through a lateral extracavitary approach, including minimal discectomy to prepare the interspace (not performed solely for decompression).

22534 $323.65

Add-on code for lateral extracavitary arthrodesis at each additional thoracic or lumbar vertebral segment beyond the first.

22840 $668.35

Posterior non-segmental instrumentation placed during spinal surgery, using rods, hooks, or wires that span multiple vertebral levels without anchoring at each intervening segment.

22842 $680.04

Posterior segmental spinal instrumentation spanning 3 to 6 vertebral segments, reported as an add-on to the primary spinal procedure code.

72148 $191.72

Non-contrast MRI of the lumbar spine used to evaluate disc pathology, spinal stenosis, nerve root compression, and other structural abnormalities without administration of contrast material.

72158 $318.31

MRI of the lumbar spinal canal and its contents performed first without contrast, then repeated after contrast administration for enhanced visualization.

72100 $40.42

Radiologic examination of the lumbosacral spine capturing two or three views, used to evaluate the lumbar vertebrae and sacrum for injury, degeneration, or structural abnormality.

72110 $53.44

Radiologic examination of the lumbar spine (lumbosacral) with a minimum of four views, including oblique and/or bending views.

72131 View procedure details

Common coding pitfalls

The recurring mistakes coders make with M48.36 and adjacent codes.

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

Appending a 7th-character extension (A, D, or S) to M48.36 — unlike M48.4x and M48.5x, this code does not carry a 7th-character requirement; stop at the 6th character.
Using M48.36 when a discrete lumbar fracture is documented — traumatic vertebral fractures belong under S32.0xx (acute) or M48.5x6 (stress/pathologic); M48.36 is reserved for non-fracture traumatic spondylopathy.
Confusing lumbar (M48.36) with thoracolumbar (M48.35) or lumbosacral (M48.37) — the junction codes apply when the provider documents involvement at T12–L1 or L5–S1 respectively.
Defaulting to unspecified spondylopathy (M48.9) when the chart clearly states 'lumbar' and 'traumatic' — M48.36 is the billable-specific code and auditors will flag the downgrade.

Clinical context

Source · Editorial summary grounded in 7 cited references ↓

M48.36 captures traumatic spondylopathy confined to the lumbar region (L1–L5). Use it when trauma has produced ligamentous disruption, bony contusion, or vertebral instability at the lumbar level that is documented as spondylopathy rather than a discrete fracture. The key distinguishing factor is the provider's characterization: if the imaging or operative report uses fracture language, S-codes or M48.4x/M48.5x codes are more appropriate. M48.36 applies when the post-traumatic structural compromise is documented as spondylopathy, instability, or similar non-fracture injury to the lumbar spine.

M48.36 is listed by CMS as a covered diagnosis supporting medical necessity for lumbar spinal fusion procedures (CMS Article A56396), sitting alongside M48.35 (thoracolumbar) and M48.37 (lumbosacral). If the injury spans the thoracolumbar junction, use M48.35; if it involves the lumbosacral junction, use M48.37. M48.36 is specific to mid-lumbar involvement. Unlike M48.4x and M48.5x, M48.36 does NOT carry a 7th-character extension requirement — it is reported as a five-character billable code without A/D/S encounter suffixes.

MS-DRG grouping falls under 551 (Medical back problems with MCC) or 552 (Medical back problems without MCC). For workers' compensation and liability claims, CMS Section 111 NGHP valid code lists include traumatic spinal codes; confirm M48.36 is on the current valid list when submitting mandatory reports.

Sibling codes

Other billable codes under M48.3 (laterality / anatomic variants).

M48.34

Traumatic spondylopathy, thoracic region

M48.38

Traumatic spondylopathy, sacral and sacrococcygeal region

M48.35

Traumatic spondylopathy, thoracolumbar region

M48.32

Traumatic spondylopathy, cervical region

M48.31

Traumatic spondylopathy, occipito-atlanto-axial region

M48.37

Traumatic spondylopathy, lumbosacral region

M48.33

Traumatic spondylopathy, cervicothoracic region

M48.30

Traumatic spondylopathy, site unspecified

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 7 cited references ↓

01Does M48.36 require a 7th-character extension like other spine codes in M48?

No. M48.36 is a complete, billable 6-character code. The 7th-character extension (A/D/S) applies to M48.4x (fatigue fracture) and M48.5x (collapsed vertebra) subcategories only. Adding a suffix to M48.36 will produce an invalid code.

02What is the difference between M48.36 and a lumbar fracture S-code?

S32.0xx codes classify acute traumatic lumbar fractures by specific vertebral level and displacement. M48.36 applies when trauma has caused spondylopathy — structural compromise, instability, or ligamentous injury — without a discrete fracture being identified or documented. If the provider or imaging report uses fracture terminology, reassign to the appropriate S32 or M48.5x code.

03Is M48.36 sufficient to support medical necessity for lumbar spinal fusion?

Yes. CMS Article A56396 explicitly lists M48.36 as an ICD-10-CM code that supports medical necessity for lumbar spinal fusion. Attach the imaging report and operative documentation to the claim when seeking prior authorization.

04When should I use M48.35 or M48.37 instead of M48.36?

Use M48.35 for traumatic spondylopathy at the thoracolumbar junction (T12–L1) and M48.37 for the lumbosacral junction (L5–S1). M48.36 is correct only when injury is localized to the lumbar region proper (L1–L5) without documented junction involvement.

05Can M48.36 be used for workers' compensation and liability claims?

Yes. CMS Section 111 NGHP reporting accepts traumatic spinal diagnosis codes. Verify M48.36 against the current FY2026 valid ICD-10 list published by CMS before submitting mandatory Section 111 reports, as list membership should be confirmed annually.

06What MS-DRGs does M48.36 map to?

M48.36 groups to MS-DRG 551 (Medical back problems with MCC) or MS-DRG 552 (Medical back problems without MCC) under MS-DRG v43.0. The presence or absence of a major complication or comorbidity drives the DRG assignment.

07Should I code an external cause alongside M48.36?

Yes when payer or facility policy requires it. CMS and the ICD-10-CM guidelines encourage voluntary external cause coding for injury encounters. Append the appropriate V, W, X, or Y code describing the mechanism (e.g., fall, MVA) to support injury research data and may assist in coordination of benefits.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

Mira AI Scribe captures the traumatic mechanism, lumbar-level localization (L1–L5), and imaging findings (MRI/CT evidence of vertebral structural compromise without discrete fracture) from the encounter note to support M48.36. This prevents downcoding to unspecified spondylopathy M48.9, mismatch to junction codes M48.35 or M48.37, or an erroneous 7th-character suffix that would trigger a claim edit.

See how Mira captures M48.36 documentation