ICD-10-CM · Spine

M41.30

M41.30 identifies thoracogenic scoliosis — spinal curvature caused by disease or operative trauma involving the thoracic cage — when the specific spinal region affected is not documented.

Verified May 8, 2026 · 6 sources ↓

Status: Billable
Chapter: 13
Related CPT: 15
Region: Spine

Drawn from CDCICD10DataAAPCClear-instituteIcdcodes

Documentation tips

What should appear in the chart to support M41.30.

Source · Editorial brief grounded in 6 cited references ↓

Identify the causative event explicitly — name the thoracic surgical procedure (e.g., thoracotomy, thoracoplasty) or the thoracic disease (e.g., lymphoma) that produced the curve; 'thoracogenic scoliosis' alone without etiology is insufficient for audit defense.
Document the Cobb angle on standing AP radiograph; a confirmed lateral curvature of ≥10° is the radiographic threshold that validates a scoliosis diagnosis.
Specify the spinal region of the curve (thoracic vs. thoracolumbar) so you can use M41.34 or M41.35 instead of the unspecified M41.30 — payers flag unspecified codes when imaging is in the record.
When radiation therapy caused the curve rather than the underlying disease itself, the provider must distinguish between the two in the note; that drives the split between M41.30 and M96.5.
If kyphoscoliosis is present, M41 includes kyphoscoliosis per the category-level inclusion note — no additional code is needed for the kyphotic component.

Related CPT procedures

Procedure codes commonly billed with M41.30. Linking the right diagnosis to the right procedure is what establishes medical necessity.

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

72081 $44.09

Single-view radiologic examination of the entire spine, capturing thoracic and lumbar regions and optionally including cervical, skull, and sacral segments — typically ordered for scoliosis evaluation or global spinal alignment assessment.

72082 $71.81

Radiologic examination of the entire thoracic and lumbar spine, capturing 2 or 3 views; skull, cervical, and sacral spine included when performed.

72083 $79.83

Radiologic examination of the entire thoracic and lumbar spine using four or five views, with optional inclusion of skull, cervical, and sacral spine regions — typically ordered for scoliosis evaluation or global spinal alignment assessment.

22800 $1,312.99

Posterior spinal arthrodesis for deformity correction spanning up to 6 vertebral segments, with or without application of a body cast.

22802 $1,936.25

Posterior spinal arthrodesis for deformity correction spanning 7 to 12 vertebral segments, with or without body cast application.

22804 $2,222.50

Posterior spinal arthrodesis for deformity correction spanning 13 or more vertebral segments, performed with or without application of a body cast.

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.

22845 $647.64

Anterior spinal instrumentation placed across 2 to 3 vertebral segments; reported as an add-on to the primary spinal procedure code.

22846 $673.36

Anterior spinal instrumentation covering 4 to 7 vertebral segments — an add-on code reported alongside the primary spinal procedure.

22847 $687.39

Anterior spinal instrumentation spanning 8 or more vertebral segments, reported as an add-on to the primary spinal procedure.

22848 $317.64

Add-on code for insertion of a pelvic fixation device during spinal instrumentation procedures, reported alongside a primary spine arthrodesis or fracture/dislocation code.

97110 $29.06

Therapeutic exercise billed per 15-minute unit, targeting strength, endurance, range of motion, or flexibility with direct one-on-one patient contact.

72084 View procedure details

97530 View procedure details

Common coding pitfalls

The recurring mistakes coders make with M41.30 and adjacent codes.

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

Assigning M41.30 for scoliosis that simply originates anatomically in the thoracic spine — 'thoracogenic' means caused by thoracic cage pathology or surgery, not thoracic-region location; idiopathic thoracic scoliosis maps to M41.124.
Using M41.30 when the curve was induced by radiation treatment — postradiation scoliosis requires M96.5 regardless of where the primary tumor was located.
Defaulting to M41.30 (unspecified site) when the operative report or imaging clearly identifies the curve level, bypassing the more specific M41.34 (thoracic) or M41.35 (thoracolumbar) codes.
Confusing thoracogenic scoliosis with neuromuscular scoliosis — conditions such as cerebral palsy or Friedreich's ataxia producing a thoracic curve belong under M41.4x, not M41.3x.
Applying M41.30 to postprocedural scoliosis that is not specifically related to thoracic cage trauma — that scenario maps to M96.89, which is an Excludes2 condition at the M41 level (meaning both codes could theoretically coexist, but only if clinically distinct).

Clinical context

Source · Editorial summary grounded in 6 cited references ↓

Thoracogenic scoliosis (M41.3x) is scoliosis that arises as a direct consequence of a thoracic cage condition: most commonly a surgical procedure such as thoracotomy or thoracoplasty, or a non-neuromuscular thoracic disease process such as lymphoma. The term 'thoracogenic' does not mean scoliosis that begins in the thoracic spine — it means the thorax itself is the causative agent. That distinction is the single most common misapplication of this code.

M41.30 is the unspecified-site fallback within the M41.3 subcategory. Use it only when the treating provider has documented a thoracogenic etiology but has not specified whether the curve is in the thoracic region (M41.34) or thoracolumbar region (M41.35). If regional documentation exists, those site-specific codes are required over M41.30.

Critical exclusions at the M41 category level: do not use M41.30 for postradiation scoliosis (M96.5), postprocedural scoliosis unrelated to thoracic cage trauma (M96.89), neuromuscular scoliosis (M41.4x), congenital scoliosis NOS (Q67.5), or congenital scoliosis due to bony malformation (Q76.3). Radiation-induced scoliosis from treatment of a lymphoma or neuroblastoma goes to M96.5, not M41.30, even though the underlying disease may be thoracic.

Sibling codes

Other billable codes under M41.3 (laterality / anatomic variants).

M41.34

Thoracogenic scoliosis, thoracic region

M41.35

Thoracogenic scoliosis, thoracolumbar region

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 6 cited references ↓

01What does 'thoracogenic' actually mean for coding purposes?

Per the Scoliosis Research Society definition, thoracogenic means the scoliosis is attributable to disease or operative trauma in or on the thoracic cage — such as a thoracotomy, thoracoplasty, or lymphoma affecting the thorax. It does not mean scoliosis whose apex happens to be in the thoracic spine.

02When should I use M41.30 versus M41.34 or M41.35?

Use M41.30 only when the provider documents a thoracogenic cause but does not specify the spinal region. If imaging or the note identifies the curve as thoracic, use M41.34; if thoracolumbar, use M41.35. M41.30 is the unspecified fallback — not the default.

03A patient had radiation for lymphoma and now has scoliosis. Is M41.30 correct?

No. Radiation-induced scoliosis maps to M96.5 (postradiation scoliosis), which is an Excludes2 condition at the M41 category level. M41.30 would apply if the lymphoma itself — not the radiation — caused the curvature, and even then only if the spinal region is unspecified.

04Does M41.30 apply to congenital thoracic scoliosis?

No. Congenital scoliosis NOS is excluded from M41 entirely (Excludes1 note pointing to Q67.5), as is congenital scoliosis due to bony malformation (Q76.3). Those codes cannot be used alongside M41.30 for the same condition.

05Can M41.30 be reported with a postprocedural scoliosis code like M96.89?

Potentially, if the two conditions are clinically distinct — M96.89 is an Excludes2 at the M41 level, meaning co-reporting is allowed when documentation supports separate conditions. However, if the postprocedural curvature is itself thoracogenic (e.g., from thoracotomy), M41.34 or M41.35 is the more specific and appropriate primary code.

06What Cobb angle threshold validates using M41.30?

A lateral spinal curvature of ≥10° on standing AP radiograph is the standard clinical threshold for a scoliosis diagnosis. Document the measured Cobb angle in the note to support medical necessity and withstand audit scrutiny.

07Is M41.30 valid for FY2026 billing?

Yes. M41.30 is a billable, specific code effective through FY2026 (October 1, 2025 forward) with no changes from prior years per the CDC ICD-10-CM Tabular List 2026.

Sources & references

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

01CDC ICD-10-CM Tabular List 2026 (effective Oct 1, 2025)
02
icd10data.com
https://www.icd10data.com/ICD10CM/Codes/M00-M99/M40-M43/M41-/M41.30
03
aapc.com
https://www.aapc.com/codes/icd-10-codes/M41.30
04
aapc.com
https://www.aapc.com/codes/icd-10-codes/M41.3
05
clear-institute.org
https://clear-institute.org/blog/icd-10-coding-for-scoliosis/
06
icdcodes.ai
https://icdcodes.ai/diagnosis/thoracic-scoliosis/documentation

Mira AI Scribe

Mira's AI scribe captures the causative thoracic event (procedure name, date, or specific disease), the Cobb angle from the standing radiograph, and the spinal region of the curve apex. Locking those three elements into the encounter note prevents fallback to the unspecified M41.30 when M41.34 or M41.35 is supportable, and gives the compliance team a documented etiology trail that separates thoracogenic from postradiation (M96.5) or neuromuscular (M41.4x) scoliosis during audit review.

See how Mira captures M41.30 documentation