2026 ICD-10-CM Diagnosis Code M89.20Other disorders of bone development and growth, unspecified site
ICD-10-CM Codes›M00–M99›M86-M90›M89
- Billable — Valid for Submission
- Not Chronic
M89.20 is a billable ICD-10-CM diagnosis code for other disorders of bone development and growth, unspecified site. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. 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.
- Abnormal bone formation
- Abnormal endochondral bone formation
- Abnormal endosteal bone formation
- Advanced bone age
- Arrest of bone development AND/OR growth
- Bipartite ossification
- Bone age finding
- Bone turnover rate absent
- Bone turnover rate decreased
- Bone turnover rate increased
- Congenital inguinal hernia
- Delayed bone age
- Delayed epiphyseal closure
- Disorder of bone development
- Dumbbell ossification
- Epiphyseal closure
- Incomplete ossification
- Interrupted ossification
- Intramembranous bone formation
- Lack of bone formation
- Marfanoid habitus, inguinal hernia, advanced bone age syndrome
- Marfanoid physique
- Premature epiphyseal closure
- Reduced ossification
- Retained endochondral cartilage cores
- Short stature co-occurrent and due to endocrine disorder
- Short stature with delayed bone age due to thyroid hormone metabolism deficiency
- Short stature, advanced bone age, early-onset osteoarthritis syndrome
- Small epiphysis
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Disorder (of) - See Also: Disease;
- development and growth NEC - M89.20
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Disorder(of)
- bone
- development and growth NEC
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 M89.20 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M89.20Overview
Is M89.20 (Other disorders of bone development and growth) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other disorders of bone development and growth, unspecified site on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does M89.20 group to?
When other disorders of bone development and growth, unspecified site is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M89.20?
Under the General Equivalence Mappings, other disorders of bone development and growth, unspecified site converts to ICD-9-CM 733.99 (bone & cartilage dis NEC). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
