2027 ICD-10-CM Diagnosis Code M93.20Osteochondritis dissecans of unspecified site
ICD-10-CM Codes›M00–M99›M91-M94›M93
- Billable — Valid for Submission
- Chronic Condition
M93.20 is a billable ICD-10-CM diagnosis code for osteochondritis dissecans of unspecified site. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 553 through 554. Coders also document this condition as familial osteochondritis dissecans. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified bone disease and musculoskeletal deformities.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Familial osteochondritis dissecans
- Osteochondritis dissecans
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M93.20: its own notes plus those printed at M93, block M91-M94, and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- postprocedural chondropathies (M96.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name M93.20, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming M93.20: they are not reported together with it, unless the two conditions are unrelated.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Osteochondritis See Also: Osteochondropathy, by site;
dissecans M93.20
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Osteochondritis Dissecans
a type of osteochondritis in which articular cartilage and associated bone becomes partially or totally detached to form joint loose bodies. affects mainly the knee, ankle, and elbow joints.
Patient EducationClinical
Bone Diseases
Your bones help you move, give you shape and support your body. They are living tissues that rebuild constantly throughout your life. During childhood and your teens, your body adds new bone faster than it removes old bone. After about age 20, you can lose bone faster than you make bone.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M93.20 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M93.20Overview
What is the ICD-10 code for osteochondritis dissecans of unspecified site?
The ICD-10-CM code for osteochondritis dissecans of unspecified site is M93.20 (sometimes written as M9320). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M93.20 (Osteochondritis dissecans) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report osteochondritis dissecans of unspecified site on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M93.20 group to?
When osteochondritis dissecans of unspecified site is the principal diagnosis on an inpatient stay, it groups to MS-DRG 554, 553, with relative weights from 0.8328 to 1.2492 depending on complications. Higher weights mean higher Medicare reimbursement.
Can M93.20 be reported with a code from M96?
Not as a rule. The Excludes1 note at block M91-M94, which applies to M93.20, lists "postprocedural chondropathies (M96.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of M93.20?
Under the General Equivalence Mappings, osteochondritis dissecans of unspecified site converts to ICD-9-CM 732.7 (osteochondrit dissecans). The mapping is approximate, so confirm the match fits the documentation.
