2027 ICD-10-CM Diagnosis Code M83.3Adult osteomalacia due to malnutrition
ICD-10-CM Codes›M00–M99›M80-M85›M83
- Billable — Valid for Submission
- Chronic Condition
M83.3 is a billable ICD-10-CM diagnosis code for adult osteomalacia due to malnutrition. 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. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Osteomalacia and Other specified bone disease and musculoskeletal deformities.
M83.3 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 87 for payment year 2027.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for M83.3.
Medicare Risk Adjustment (HCC)Billing
M83.3 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Adult osteomalacia due to malnutrition
- Osteomalacia due to vitamin D deficiency
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M83.3: its own notes plus those printed at M83 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.
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 M83.3, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming M83.3: they are not reported together with it, unless the two conditions are unrelated.
- E21 Hyperparathyroidism and other disorders of parathyroid glandadult osteomalacia (M83.-) names M83.-, which includes this code
- E55 Vitamin D deficiencyadult osteomalacia (M83.-) names M83.-, which includes this code
- E83.3 Disorders of phosphorus metabolism and phosphatasesadult osteomalacia (M83.-) names M83.-, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
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 M83.3 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M83.3Overview
What is the ICD-10 code for adult osteomalacia due to malnutrition?
The ICD-10-CM code for adult osteomalacia due to malnutrition is M83.3 (sometimes written as M833). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M83.3 (Adult osteomalacia) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report adult osteomalacia due to malnutrition on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M83.3 group to?
When adult osteomalacia due to malnutrition 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.
Who can M83.3 be reported for?
The Medicare Code Editor checks adult osteomalacia due to malnutrition against patient demographics: this code is intended for adult patients (age 15 through 124). Claims outside these limits are flagged as inconsistent.
Can M83.3 be reported with E55.0?
Not as a rule. The Excludes1 note at M83, which applies to M83.3, lists "infantile and juvenile osteomalacia (E55.0)". 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).
Does M83.3 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: M83.3 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 87 (Osteoporosis, Vertebral and Pathological Fractures).
