2026 ICD-10-CM Diagnosis Code M83.5Other drug-induced osteomalacia in adults

ICD-10-CM Codes›M00–M99›M80-M85›M83

ICD-10-CM M83.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M83.5 is a billable ICD-10-CM diagnosis code for other drug-induced osteomalacia in adults. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 553 through 554. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). Coders also document this condition as anticonvulsant drug-induced osteomalacia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Drug induced or toxic related condition and Osteomalacia.

Code Identity

ICD-10-CM Code
M83.5
Billable Status
Yes — Valid for Submission
Code Describes
Other drug-induced osteomalacia in adults
Short Description
Other drug-induced osteomalacia in adults
Same as the full description in the CMS dataset.
Parent Code
M83
Adult osteomalacia

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM80-M85Disorders of bone density and structure
CategoryM83Adult osteomalacia
This CodeM83.5Other drug-induced osteomalacia in adults

Code EditsBilling

Medicare Code Editor checks that affect claim validity for M83.5.

Adult diagnoses
The Medicare Code Editor detects inconsistencies in adult cases by checking a patient's age and any diagnosis on the patient's record. The adult code edits apply to patients age range is 15–124 years inclusive (e.g., senile delirium, mature cataract).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Anticonvulsant drug-induced osteomalacia
  • Osteomalacia secondary to drug

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code for adverse effect, if applicable, to identify drug T36 T50

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Osteomalacia
      • adult
        • drug-induced NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ030
Drug induced or toxic related condition
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR MUS035
Osteomalacia
Default principal diagnosis: inpatient No · outpatient No

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 M83.5 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
268.2 Osteomalacia NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M83.5Overview

Is M83.5 (Adult osteomalacia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other drug-induced osteomalacia in adults on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M83.5 group to?

When other drug-induced osteomalacia in adults is the principal diagnosis on an inpatient stay, it groups to MS-DRG 553, 554, with relative weights from 0.8301 to 1.2963 depending on complications. Higher weights mean higher Medicare reimbursement.

Who can M83.5 be reported for?

The Medicare Code Editor checks other drug-induced osteomalacia in adults against patient demographics: this code is intended for adult patients (age 15 through 124). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of M83.5?

Under the General Equivalence Mappings, other drug-induced osteomalacia in adults converts to ICD-9-CM 268.2 (osteomalacia NOS). 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.