M83.9 – Adult osteomalacia, unspecified

ICD-10-CM 2027 diagnosis code · Disorders of bone density and structure

Billable code

ICD-10-CM code M83.9

Code: M83.9 (claims format: M839)
Description: Adult osteomalacia, unspecified
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M80-M85 Disorders of bone density and structure
Parent codes: M83

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M83 – Adult osteomalacia

Excludes1 (not coded here):

infantile and juvenile osteomalacia (E55.0)
renal osteodystrophy (N25.0)
rickets (active) (E55.0)
rickets (active) sequelae (E64.3)
vitamin D-resistant osteomalacia (E83.31)
vitamin D-resistant rickets (active) (E83.31)

Index terms for M83.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in M83

M83.0 – Puerperal osteomalaciaBillable
M83.1 – Senile osteomalaciaBillable
M83.2 – Adult osteomalacia due to malabsorptionBillable
M83.3 – Adult osteomalacia due to malnutritionBillable
M83.4 – Aluminum bone diseaseBillable
M83.5 – Other drug-induced osteomalacia in adultsBillable
M83.8 – Other adult osteomalaciaBillable

Frequently asked questions

What is ICD-10 code M83.9?

M83.9 is the ICD-10-CM code for adult osteomalacia, unspecified, in the block M80-M85 (Disorders of bone density and structure).

Is M83.9 a billable code?

Yes. M83.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M83.9 belong to?

It belongs to category M83 – Adult osteomalacia.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.