M41.52 identifies scoliosis of the cervical spine that is secondary to an underlying disease or condition — not idiopathic, congenital, or postprocedural in origin.

Documentation tips

What should appear in the chart to support M41.52.

Source · Editorial brief grounded in 5 cited references ↓

• Specify the underlying condition by name in the clinical note — the 'Code First' instruction at M41.5 requires an established etiology to support sequencing.
• Document the curve apex location with imaging (plain film or MRI) confirming the primary curve resides in the cervical region (C1–C6) to justify M41.52 over M41.53 (cervicothoracic) or M41.50 (unspecified).
• Record Cobb angle measurement from the PA radiograph to substantiate severity and support medical necessity for any planned intervention.
• Note whether the cervical curve is the primary structural curve or a compensatory curve — compensatory curves in the cervical region secondary to a primary thoracic or lumbar deformity may affect sequencing.
• If multiple curves are present, document and code each region separately (e.g., M41.52 + M41.54) rather than defaulting to a single unspecified code.

Related CPT procedures

Procedure codes commonly billed with M41.52. 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 M41.52 and adjacent codes.

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

• Sequencing M41.52 as the principal diagnosis violates the 'Code First underlying disease' instruction at M41.5 — the causative condition must be listed first.
• Assigning M41.52 when postprocedural scoliosis (M96.89) or postradiation scoliosis (M96.5) is the actual etiology — those conditions have dedicated codes and are excluded from M41.
• Defaulting to M41.50 (site unspecified) when imaging has confirmed a cervical apex — unspecified site codes invite audit scrutiny and can affect DRG assignment.
• Confusing M41.52 (cervical) with M41.53 (cervicothoracic) when the curve spans the cervicothoracic junction — code to the region where the apex falls, or use both codes if multiple structural curves are present.
• Using M41.52 for congenital scoliosis — congenital scoliosis due to bony malformation is Q76.3, and congenital scoliosis NOS is Q67.5; neither maps to M41.

Clinical context

Source · Editorial summary grounded in 5 cited references ↓

Sibling codes

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