Acute gout of the vertebral column caused by a medication's adverse effect on uric acid metabolism, classified under drug-induced gout at the spinal site.
Verified May 8, 2026 · 5 sources ↓
- Status
- Billable
- Chapter
- 13
- Related CPT
- 10
- Region
- Spine
Documentation tips
What should appear in the chart to support M10.28.
Source · Editorial brief grounded in 5 cited references ↓
- Provider must explicitly document that gout is caused by an identified drug — name the drug, not just the drug class.
- Always assign a companion T36–T50 adverse effect code with the 5th or 6th character '5' alongside M10.28; the tabular instruction at M10.2 mandates this.
- Document the spinal region involved (cervical, thoracic, lumbar, sacral) and any imaging findings such as urate crystal deposition on CT or MRI, tophus formation on facet joints, or joint erosion.
- Distinguish acute flare from chronic disease: if tophi are present or the condition is longstanding, consider M1A.28 (chronic drug-induced gout, vertebrae) instead.
- Record the causative drug's start date and confirm the temporal relationship between drug initiation and gout onset to support the adverse effect attribution.
Related CPT procedures
Procedure codes commonly billed with M10.28. 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 M10.28 and adjacent codes.
Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓
- Assigning M10.28 without the required T36–T50 adverse effect companion code violates the mandatory 'use additional code' instruction at the M10.2 subcategory level.
- Using M10.28 for chronic or tophaceous spinal gout — chronic drug-induced gout of the vertebrae belongs to M1A.28 per the Excludes2 note at M10.
- Defaulting to M10.9 (unspecified gout) when documentation is available — if the provider names the drug and the site, M10.28 with a T-code is the correct, specific choice.
- Confusing drug-induced gout (M10.2x) with gout secondary to renal impairment (M10.3x) — the root cause distinction must come directly from provider documentation, not coder interpretation.
- Applying peripheral joint laterality conventions (right/left 6th character) to M10.28 — vertebrae codes in the M10 family do not carry a laterality character; '8' itself denotes the vertebral site.
Clinical context
Source · Editorial summary grounded in 5 cited references ↓
M10.28 applies when documentation explicitly links a gouty flare in the vertebrae to a specific drug's adverse pharmacological effect — most commonly diuretics (especially thiazides and loop diuretics), low-dose aspirin, cyclosporine, pyrazinamide, or niacin, all of which raise serum uric acid. Spinal gout is uncommon compared to peripheral joint involvement, but it does occur, typically affecting the lumbar facet joints, the ligamentum flavum, or intervertebral disc spaces. Without clear documentation tying the gout to a drug etiology, default to idiopathic (M10.08) or secondary gout (M10.38/M10.48) depending on the documented cause.
Critically, M10.28 requires a mandatory companion code from the T36–T50 range (with 5th or 6th character '5') to identify the offending drug as an adverse effect. Omitting this companion code is a compliance gap that can trigger a claim rejection or audit flag. The Excludes2 note at M10 means chronic drug-induced gout of the vertebrae belongs to M1A.28, not here — if the patient has tophaceous or longstanding gouty disease, verify whether the chronic code applies.
Spinal gout often presents as axial back pain with or without radiculopathy, making it easy to conflate with degenerative disc disease or facet arthropathy. The drug-induced etiology must be stated by the treating provider, not inferred by the coder.
Sibling codes
Other billable codes under M10.2 (laterality / anatomic variants).
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 5 cited references ↓
01Do I need a second code when billing M10.28?
02What's the difference between M10.28 and M1A.28?
03Which drugs most commonly trigger the need for M10.28?
04Can I use M10.28 if the provider documents 'gout' in the spine without specifying a cause?
05Is laterality required for M10.28?
06How does spinal gout typically present, and how does that affect coding?
07What if the patient has both drug-induced spinal gout and renal impairment?
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-/M10.28
- 03aapc.comhttps://www.aapc.com/codes/icd-10-codes/M10.28
- 04aapc.comhttps://www.aapc.com/codes/icd-10-codes/M10.2
- 05outsourcestrategies.comhttps://www.outsourcestrategies.com/blog/documenting-gout-symptoms-diagnosis-and-icd-10-codes/
Mira AI Scribe
Mira AI Scribe captures the treating provider's explicit statement linking the drug (by name) to the gouty flare, the vertebral region involved, serum uric acid level, and relevant imaging findings (e.g., DECT urate deposition, facet joint erosion on MRI). This prevents the claim from dropping to unspecified M10.9 and ensures the mandatory T36–T50 adverse effect code is triggered automatically.
See how Mira captures M10.28 documentation