ICD-10-CM · Spine

M41.54

Lateral spinal curvature of the thoracic region arising from a known underlying cause other than congenital bony malformation, postprocedural change, or postradiation injury.

Verified May 8, 2026 · 7 sources ↓

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

Drawn from CDCICD10DataAAPCOutsourcestrategiesClear-institute

Documentation tips

What should appear in the chart to support M41.54.

Source · Editorial brief grounded in 7 cited references ↓

Name the underlying disease explicitly in the note — e.g., 'scoliosis secondary to Duchenne muscular dystrophy' — because the 'Code first' instruction requires the causative diagnosis to be sequenced before M41.54.
Document the Cobb angle measurement and the end vertebrae used (e.g., T5–T12) to confirm the curve falls in the thoracic region and to support medical necessity for surgical or orthotics referrals.
Specify whether kyphosis coexists (kyphoscoliosis); M41.54 covers this combination, but the note should reflect the combined deformity for clinical accuracy.
Record imaging modality and date (standing PA and lateral radiographs are standard) to substantiate the structural curve diagnosis and Cobb angle reported.
Avoid using terms 'cervicodorsal' or 'lumbodorsal' in clinical notes — use 'cervicothoracic' and 'thoracolumbar' respectively to align terminology with ICD-10-CM regional descriptors.

Related CPT procedures

Procedure codes commonly billed with M41.54. Linking the right diagnosis to the right procedure is what establishes medical necessity.

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

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.

22842 $680.04

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

22843 $728.47

Posterior segmental spinal instrumentation spanning 7 to 12 vertebral segments, reported as an add-on to the primary fusion or decompression procedure.

22844 $875.10

Posterior segmental spinal instrumentation spanning 13 or more vertebral segments, reported as an add-on to the primary spinal procedure.

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.

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.

20610 $68.81

Aspiration and/or injection of a major joint or bursa (shoulder, hip, knee, or subacromial bursa) performed without ultrasound guidance.

72072 View procedure details

72074 View procedure details

72084 View procedure details

97530 View procedure details

Common coding pitfalls

The recurring mistakes coders make with M41.54 and adjacent codes.

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

Forgetting to sequence the underlying disease first: M41.54 is always a secondary code when M41.5x is used — submitting it as the principal diagnosis without the causative condition triggers a coding error and potential audit flag.
Using M41.54 for postprocedural or postradiation thoracic scoliosis: those cases require M96.89 or M96.5 respectively, which are Excludes2 codes and cannot be reported together with M41.54 for the same condition.
Confusing M41.54 (other secondary, thoracic) with M41.44 (neuromuscular scoliosis, thoracic) — if the underlying cause is specifically neuromuscular, M41.44 may be the more precise parent-category choice; verify whether the documentation supports neuromuscular versus 'other secondary' etiology.
Defaulting to M41.54 when the curve is thoracolumbar: if end vertebrae cross the thoracolumbar junction, use M41.55, not M41.54.
Coding M41.54 for congenital scoliosis from bony malformation — Q76.3 is the correct code and M41.54 is excluded for that etiology.

Clinical context

Source · Editorial summary grounded in 7 cited references ↓

M41.54 applies when a thoracic scoliotic curve is secondary to an identifiable underlying disease — such as a neuromuscular disorder (e.g., cerebral palsy, muscular dystrophy, syringomyelia), connective tissue disease, or metabolic bone disease — and the apex or measured region falls within the thoracic spine. The curve is typically defined by end vertebrae between approximately T2 and T12 using Cobb angle measurement. The parent category M41.5 carries a 'Code first underlying disease' instruction, meaning the causative diagnosis must appear as the first-listed code before M41.54 on the claim.

Do not use M41.54 for scoliosis caused by bony malformation (use Q76.3), congenital scoliosis NOS (Q67.5), postprocedural scoliosis (M96.89), or postradiation scoliosis (M96.5) — all are Excludes1 or Excludes2 exclusions at the M41 category level. If the curve spans the thoracic and lumbar regions (thoracolumbar), use M41.55 instead. When the underlying condition is neuromuscular, thoracic scoliosis in this category is distinct from idiopathic forms (M41.14) and thoracogenic scoliosis (M41.3), so confirm etiology before code selection.

Region assignment follows the Cobb angle end vertebrae convention: a curve measured from T5–T12 is thoracic (M41.54); a curve measured from T7–L3 shifts to thoracolumbar (M41.55). If the scoliosis also involves kyphosis (kyphoscoliosis), M41.54 still applies — kyphoscoliosis is included under M41 per the Includes note.

Sibling codes

Other billable codes under M41.5 (laterality / anatomic variants).

M41.50

Other secondary scoliosis, site unspecified

M41.55

Other secondary scoliosis, thoracolumbar region

M41.56

Other secondary scoliosis, lumbar region

M41.52

Other secondary scoliosis, cervical region

M41.53

Other secondary scoliosis, cervicothoracic region

M41.57

Other secondary scoliosis, lumbosacral region

Frequently asked questions

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

01What must be coded before M41.54 on a claim?

The underlying disease causing the scoliosis — for example, a neuromuscular disorder, connective tissue disease, or metabolic bone condition — must be listed first per the 'Code first underlying disease' instruction at the M41.5 parent level.

02Can M41.54 be used for thoracic scoliosis that developed after spine surgery?

No. Postprocedural scoliosis is coded M96.89, which is an Excludes2 condition under M41. Use M96.89 for scoliosis that arose as a direct result of a surgical procedure.

03How do I determine whether a curve is thoracic (M41.54) versus thoracolumbar (M41.55)?

Region is determined by the end vertebrae defining the Cobb angle. A curve measured between T2 and T12 is thoracic; if the end vertebrae cross into the lumbar spine — for example T7 to L3 — code M41.55 for thoracolumbar region instead.

04Is M41.54 appropriate when kyphosis coexists with the lateral curve?

Yes. The M41 category Includes note explicitly covers kyphoscoliosis, so M41.54 is valid when both lateral curvature and thoracic hyperkyphosis are present in the secondary scoliosis context.

05What is the difference between M41.54 and M41.44?

M41.44 is neuromuscular scoliosis of the thoracic region (a distinct subcategory M41.4), while M41.54 falls under M41.5 'other secondary scoliosis.' If the documented cause is specifically a neuromuscular condition, verify whether M41.44 is the more precise match before defaulting to M41.54.

06Does M41.54 require a specific Cobb angle threshold?

ICD-10-CM does not set a numeric Cobb angle threshold for code validity, but clinical standard and payer medical necessity policies generally require a Cobb angle ≥10° measured on standing radiographs to substantiate a structural scoliosis diagnosis.

07Can M41.54 be billed with a congenital bony malformation code like Q76.3?

No. Congenital scoliosis due to bony malformation (Q76.3) is an Excludes1 condition under M41, meaning it cannot be reported alongside M41.54 — those cases belong exclusively to Q76.3.

Sources & references

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

Mira AI Scribe

Mira captures the underlying diagnosis driving the scoliotic curve, the Cobb angle with named end vertebrae confirming thoracic region involvement, imaging date, and any coexisting kyphosis — so the 'Code first' sequencing requirement is met automatically and the claim isn't returned for missing causative diagnosis or region ambiguity.

See how Mira captures M41.54 documentation