M24.89 classifies a specific, named joint derangement occurring at a joint that is neither covered by a more precise M24.8x subcode nor falling under any other ICD-10-CM category — a true residual bucket for unusual or lesser-coded joints.
Verified May 8, 2026 · 4 sources ↓
- Status
- Billable
- Chapter
- 13
- Related CPT
- 10
- Region
- Other
Documentation tips
What should appear in the chart to support M24.89.
Source · Editorial brief grounded in 4 cited references ↓
- Name the specific joint explicitly in the note — 'sacroiliac joint derangement' or 'sternoclavicular joint derangement' — since M24.89 provides no laterality character and the joint identity lives entirely in the documentation.
- Describe the nature of the derangement (e.g., capsular laxity, internal derangement, hypermobility) to distinguish it from a simple sprain, instability code, or contraction that may have its own more specific code.
- Document why a more specific M24.0–M24.7 code does not apply — if the joint has a dedicated subcode in the M24.8x series, you must use that code instead of M24.89.
- Record imaging findings (MRI, CT arthrogram, plain film) that support the derangement diagnosis, including any structural abnormality identified at the specified joint.
- If conservative care has been attempted, list modalities and duration — this supports medical necessity, especially when the chronic condition indicator triggers payer scrutiny.
Related CPT procedures
Procedure codes commonly billed with M24.89. 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 M24.89 and adjacent codes.
Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓
- Using M24.89 for a joint that already has a dedicated M24.8x subcode (shoulder, elbow, wrist, hand, hip, ankle, foot) — those joints must be coded at their specific 6th-character level, not funneled to M24.89.
- Selecting M24.89 when a more precise condition-specific code exists elsewhere in Chapter 13 — loose bodies (M24.0x), contracture (M24.5x), and instability (M24.3x) each have their own code families with laterality; M24.89 is not a substitute.
- Leaving the operative report or clinic note vague about which joint is involved — M24.89 has no laterality digit, so all specificity depends on written documentation; an unspecified joint derangement should default to M24.9, not M24.89.
- Confusing M24.89 with M24.9 (joint derangement, unspecified) — M24.89 requires documentation of a specific, named joint and a specific derangement type that simply lacks a dedicated code; M24.9 is for encounters where neither the joint nor the derangement type is documented.
Clinical context
Source · Editorial summary grounded in 4 cited references ↓
M24.89 is the terminal catch-all within the M24.8 subcategory for joints that have dedicated derangement pathology but no more specific ICD-10-CM home. The M24.8x series covers derangements at the shoulder (M24.81x), elbow (M24.82x), wrist (M24.83x), hand (M24.84x), hip (M24.85x), knee (M24.87x — note M24.86x is not used for knee in the standard series), ankle and foot (M24.87x–M24.876). If the documented joint is not enumerated in those subcodes — for example, the sacroiliac joint, acromioclavicular joint, sternoclavicular joint, or temporomandibular joint when a derangement doesn't fit a more specific code elsewhere — M24.89 is the appropriate selection.
Before assigning M24.89, confirm that no more precise code exists in the ICD-10-CM tabular for the condition and joint in question. Many joint-specific derangements (loose bodies, contractures, instability, osteochondritis dissecans) have their own M24.0–M24.7 codes with laterality. Only derangements characterized as 'other specific' and not described in those subsets land at M24.8x. M24.89 does not carry a laterality character — the 'other specified joint' is identified through clinical documentation, not a 6th character.
This code carries a chronic condition indicator. Payers treating it as a chronic diagnosis may require evidence of ongoing management or conservative care failure before authorizing surgical intervention. Always pair it with procedure codes that match the documented joint, and consider whether a more descriptive diagnosis (e.g., M53.3 for sacrococcygeal derangement, or a condition-specific code) should be used first.
Sibling codes
Other billable codes under M24.8 (laterality / anatomic variants).
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 4 cited references ↓
01Which joints actually get coded to M24.89?
02Does M24.89 have a laterality character?
03Can I use M24.89 for a hip or knee derangement?
04What is the difference between M24.89 and M24.9?
05When was M24.89 added to ICD-10-CM?
06Does M24.89 map to a specific MS-DRG?
07Should I use M24.89 for a sacroiliac joint derangement?
Sources & references
Editorial content was developed using the following public sources. Last verified May 8, 2026.
Mira AI Scribe
Mira's AI scribe captures the named joint, the derangement type (e.g., internal derangement, capsular instability, hypermobility), supporting imaging findings, and any prior conservative treatment — the precise details that justify M24.89 over the catch-all M24.9 and prevent a payer from downgrading the claim or flagging it for lack of specificity.
See how Mira captures M24.89 documentation