2027 ICD-10-CM Diagnosis Code M93.831Other specified osteochondropathies, right forearm

ICD-10-CM Codes›M00–M99›M91-M94›M93

ICD-10-CM M93.831
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M93.831 is a billable ICD-10-CM diagnosis code for other specified osteochondropathies, right forearm. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified bone disease and musculoskeletal deformities.

Code Identity

ICD-10-CM Code
M93.831
Billable Status
Yes — Valid for Submission
Code Describes
Other specified osteochondropathies, right forearm
Short Description
Other specified osteochondropathies, right forearm
Same as the full description in the CMS dataset.
Parent Code
M93.83
Other specified osteochondropathies of forearm

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM91-M94Chondropathies
CategoryM93Other osteochondropathies
This CodeM93.831Other specified osteochondropathies, right forearm

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M93.831: 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.

From Block M91-M94 Chondropathies applies to 212 codes
  • 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.

From M93 Other osteochondropathies applies to 105 codes
  • osteochondrosis of spine (M42.-)
From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • 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.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • 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.

Clinical ClassificationClinical

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

CCSR MUS028
Other specified bone disease and musculoskeletal deformities
Default principal diagnosis: inpatient Yes · outpatient Yes

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 M93.831 to ICD-9-CMHistory

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

ICD-9-CM
732.8 Osteochondropathy NEC
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M93.831Overview

What is the ICD-10 code for other specified osteochondropathies, right forearm?

The ICD-10-CM code for other specified osteochondropathies, right forearm is M93.831 (sometimes written as M93831). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is M93.831 (Other specified osteochondropathies of forearm) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified osteochondropathies, right forearm on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does M93.831 group to?

When other specified osteochondropathies, right forearm 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 M93.831 be reported with a code from M96?

Not as a rule. The Excludes1 note at block M91-M94, which applies to M93.831, 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 M93.831?

Under the General Equivalence Mappings, other specified osteochondropathies, right forearm converts to ICD-9-CM 732.8 (osteochondropathy NEC). The mapping is approximate, so confirm the match fits the documentation.