M10.48 identifies other secondary gout localized to the vertebrae — meaning gout caused by an underlying condition (not idiopathic) that has produced urate crystal deposition in the spinal joints or surrounding vertebral structures.
Verified May 8, 2026 · 4 sources ↓
- Status
- Billable
- Chapter
- 13
- Related CPT
- 10
- Region
- Spine
Documentation tips
What should appear in the chart to support M10.48.
Source · Editorial brief grounded in 4 cited references ↓
- Name the underlying condition driving the secondary gout (e.g., chronic kidney disease, myeloproliferative disorder, lead nephropathy) — the 'code first' instruction requires it to be separately documented and coded.
- Specify 'vertebrae' or 'spine' as the affected site; a general gout note without anatomic localization won't support M10.48 over an unspecified code.
- Document imaging findings that support vertebral urate deposition — CT showing erosive lesions near facet joints, MRI signal changes, or dual-energy CT urate mapping — to substantiate the diagnosis on audit.
- Record whether this is an acute flare or a chronic/recurrent pattern; if chronic with tophi, evaluate M1A.48 (chronic gout, vertebrae) instead.
- Capture any prior uric acid lab values, urate-lowering therapy history, and relevant comorbidities (renal impairment, diuretic use) to support secondary — not idiopathic — classification.
Related CPT procedures
Procedure codes commonly billed with M10.48. 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 M10.48 and adjacent codes.
Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓
- Failing to sequence the underlying associated condition first — M10.48 has a 'code first' instruction under M10.4; placing M10.48 as the principal diagnosis without the causative condition violates coding guidelines and creates an audit risk.
- Using M10.48 for chronic gout — the Excludes2 note on M10 directs chronic gout to M1A; if documentation supports recurrent episodes with tophi, M1A.48 is correct.
- Defaulting to unspecified gout (M10.9) when the site is documented — if the provider has documented vertebral involvement, M10.48 is required; M10.9 is a last resort, not a shortcut.
- Confusing secondary gout (M10.4x) with drug-induced gout (M10.2x) — if a specific medication is identified as the sole precipitating cause, verify whether M10.2x is more precise, and apply an adverse effect code from the T-code range.
Clinical context
Source · Editorial summary grounded in 4 cited references ↓
Secondary gout differs from idiopathic gout (M10.0x) in that it arises as a consequence of an identifiable underlying condition — such as myeloproliferative disorders, enzyme deficiencies, lead exposure, or medication effects (e.g., cyclosporine, diuretics). M10.48 narrows that to the vertebral site, which is an atypical but documented location for gouty arthropathy, often presenting as axial pain or tophaceous deposits near facet joints or intervertebral disc spaces.
The M10.4x parent category carries a 'code first associated condition' instruction. That means the underlying cause of secondary gout must be sequenced as the principal or first-listed diagnosis before M10.48. If you skip that sequencing step, expect an audit flag or claim edit. Note also the Excludes2 note on M10: chronic gout belongs under M1A (not M10), so if the vertebral gout has a chronic, recurrent course with documented tophi, review whether M1A.48 is the more accurate code.
Vertebral gout is rarely the sole diagnosis at an orthopedic encounter. When it is identified alongside radiculopathy or spinal stenosis symptoms, code both — the gout as the underlying cause and the spinal manifestation separately — to fully capture clinical complexity and justify diagnostic workup or procedural services.
Sibling codes
Other billable codes under M10.4 (laterality / anatomic variants).
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 4 cited references ↓
01What makes gout 'secondary' versus idiopathic for coding purposes?
02Which code goes first — the underlying condition or M10.48?
03When should I use M1A.48 instead of M10.48?
04Is drug-induced vertebral gout coded with M10.48?
05Does M10.48 have laterality or other sub-extensions?
06What imaging or lab findings best support M10.48 on audit?
07Can M10.48 be reported alongside spinal stenosis or radiculopathy codes?
Sources & references
Editorial content was developed using the following public sources. Last verified May 8, 2026.
- 01CDC ICD-10-CM Tabular List 2026 (FY2026, effective Oct 1, 2025)
- 02icd10data.comhttps://www.icd10data.com/ICD10CM/Codes/M00-M99/M05-M14/M10-/M10.48
- 03aapc.comhttps://www.aapc.com/codes/icd-10-codes/M10.48
- 04outsourcestrategies.comhttps://www.outsourcestrategies.com/blog/documenting-gout-symptoms-diagnosis-and-icd-10-codes/
Mira AI Scribe
Mira's AI scribe captures the underlying causative condition (e.g., CKD stage, diuretic agent, hematologic disorder), the vertebral site of involvement, relevant lab values (serum uric acid, synovial fluid crystal analysis if performed), and any imaging characterizing the spinal lesion. That documentation locks in the 'code first' sequencing requirement and distinguishes secondary from idiopathic gout — preventing a downcode to M10.9 and a sequencing error that triggers claim edits.
See how Mira captures M10.48 documentation