ICD-10 M27.8
Billable / SpecificOther specified diseases of jaws
About ICD-10-CM M27.8
ICD-10-CM code M27.8 represents Other specified diseases of jaws. This is a billable/specific code in the Musculoskeletal and Connective Tissue chapter (block M27). The 2026 edition of ICD-10-CM M27.8 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under M27.8. Per CMS ICD-10-CM Tabular 2026.
- Cherubism
- Exostosis
- Fibrous dysplasia
- Unilateral condylar hyperplasia
- Unilateral condylar hypoplasia
Type 1 Excludes
Pure excludes, these codes can never be coded together with M27.8. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- jaw pain (R68.84)
Medicare LCD Coverage for M27.8
Local Coverage Determinations (LCDs) from CMS MACs that list M27.8 as a covered diagnosis.
Showing top 10 of 144 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing M27.8.
2 Medicare
CPT Codes Commonly Billed with M27.8
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert M27.8 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| M27.8 | 52681 | 10000 |
| M27.8 | 52689 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To M27.8
Other codes in section M26-M27 (Dentofacial anomalies [including malocclusion] and other disorders of jaw).
ICD-10 M27.8, Billing FAQ
Is ICD-10 code M27.8 billable? +
Yes, M27.8 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to M27.8? +
ICD-10 M27.8 includes: Cherubism; Exostosis; Fibrous dysplasia, and 2 more clinical synonyms.
What codes are Type 1 Excludes for M27.8? +
Type 1 Excludes (never code together with M27.8): jaw pain (R68.84)
What ICD-9 codes does M27.8 map to? +
Per CMS GEMs, M27.8 maps to ICD-9 codes: 52681, 52689. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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