M93.88 captures other specified osteochondropathies occurring at anatomical sites that do not map to any of the explicitly named site-specific subcategories under M93.8 — essentially a residual 'other site' bucket within the other specified osteochondropathies grouping.
Verified May 8, 2026 · 4 sources ↓
- Status
- Billable
- Chapter
- 13
- Related CPT
- 5
- Region
- Other
Documentation tips
What should appear in the chart to support M93.88.
Source · Editorial brief grounded in 4 cited references ↓
- Document the specific anatomical site by name — M93.88 is a residual code and payer reviewers will look for site justification in the record.
- Record the specific osteochondropathy diagnosis by name (e.g., Panner disease at an atypical site) so that a more precise code can be confirmed or ruled out on audit.
- Note why more site-specific M93.8x subcategories do not apply — this protects against a query or down-code to M93.9 (osteochondropathy, unspecified).
- If imaging supports the diagnosis, document the modality, findings, and affected bone or joint explicitly; vague imaging language increases audit risk.
- If multiple sites are involved, document each site separately and consider M93.89 (multiple sites) rather than M93.88.
Related CPT procedures
Procedure codes commonly billed with M93.88. 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 M93.88 and adjacent codes.
Source · Editorial brief grounded in CDC ICD-10-CM tabular guidance, AAOS coding references, and cited references ↓
- Defaulting to M93.88 when a site-specific subcategory (M93.81–M93.87x) actually applies — always check the full M93.8 hierarchy before landing here.
- Confusing M93.88 ('other' site) with M93.89 ('multiple sites') — use M93.89 when more than one anatomical site is documented.
- Assigning M93.88 for spinal osteochondrosis — the Excludes 2 at M93 directs spinal osteochondrosis to M42, not M93.88.
- Using the unspecified parent M93.9 when the physician has documented a specific osteochondropathy type — M93.88 provides greater specificity and is preferred when the type is named but the site is 'other.'
Clinical context
Source · Editorial summary grounded in 4 cited references ↓
Use M93.88 when the physician documents a named, specific osteochondropathy — one that does not fall under osteochondritis dissecans (M93.2), Kienböck's disease (M93.1), or slipped upper femoral epiphysis (M93.0) — and the affected anatomical site is not shoulder, upper arm, forearm, hand, thigh, lower leg, or ankle/foot. The code sits beneath parent M93.8 (Other specified osteochondropathies) and is explicitly designated 'other' to capture sites that lack a dedicated subcategory in the M93.87x range. If the condition affects multiple sites simultaneously, use M93.89 instead.
Common clinical scenarios include named osteochondropathies affecting the pelvis, sacroiliac region, or other trunk sites not otherwise classified, as well as documented chondropathy conditions at atypical sites where the clinician specifies the diagnosis but the site does not correspond to a more granular M93.8x code. Note the Excludes 2 at the M93 category level: osteochondrosis of the spine (M42.-) is coded separately — you can report both if both conditions are present, but spinal osteochondrosis belongs under M42, not M93.88.
Before assigning M93.88, exhaust all site-specific options under M93.8 (M93.81 through M93.87x). If laterality is documented but the site fits a more specific subcategory, drop to that code. M93.88 is appropriate only when the site genuinely has no home elsewhere in the M93.8x hierarchy.
Sibling codes
Other billable codes under M93.8 (laterality / anatomic variants).
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 4 cited references ↓
01When should I use M93.88 instead of M93.89?
02Can M93.88 be used for spinal osteochondrosis?
03Is M93.88 billable on its own for a payer claim?
04What is the difference between M93.88 and M93.9?
05Does M93.88 require a 7th-character extension?
06What CPT procedures are commonly paired with M93.88?
Sources & references
Editorial content was developed using the following public sources. Last verified May 8, 2026.
Mira AI Scribe
Mira AI Scribe captures the specific osteochondropathy diagnosis by name, the affected anatomical site (with explicit notation that it falls outside the shoulder, arm, forearm, hand, thigh, lower leg, and ankle/foot subcategories), and any supporting imaging findings. Precise site and diagnosis documentation prevents downcoding to the unspecified M93.9 and blocks payer queries challenging medical necessity for cartilage-related procedures.
See how Mira captures M93.88 documentation