2027 ICD-10-CM Diagnosis Code M70.031Crepitant synovitis (acute) (chronic), right wrist
ICD-10-CM Codes›M00–M99›M70-M79›M70
- Billable — Valid for Submission
- Not Chronic
M70.031 is a billable ICD-10-CM diagnosis code for crepitant synovitis (acute) (chronic), right wrist. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 557 through 558. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Tendon and synovial disorders.
Code Identity
Code Classification
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M70.031: its own notes plus those printed at M70 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- soft tissue disorders of occupational origin
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)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
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 M70.031, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming M70.031: they are not reported together with it, unless the two conditions are unrelated.
- M65 Synovitis and tenosynovitischronic crepitant synovitis of hand and wrist (M70.0-) names M70.0-, which includes this code
- M65 Synovitis and tenosynovitissoft tissue disorders related to use, overuse and pressure (M70.-) names M70.-, which includes this code
- M71 Other bursopathiesbursitis related to use, overuse or pressure (M70.-) names M70.-, which includes this code
Excludes2 2
These codes carry an Excludes2 note naming M70.031: its condition is not part of those codes, and both may be reported when the patient has both.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Wrist Injuries and Disorders
Your wrist connects your hand to your forearm. It is not one big joint; it has several small joints. This makes it flexible and allows you to move your hand in different ways. The wrist has two big forearm bones and eight small bones known as carpals. It also has tendons and ligaments, which are connective tissues.
The full article covers:
- What are the types of wrist injuries and disorders?
- Who is at risk for wrist injuries and disorders?
- What are the symptoms of wrist injuries and disorders?
- How are wrist injuries and disorders diagnosed?
- What are the treatments for wrist injuries and disorders?
- Can wrist injuries and disorders be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M70.031 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M70.031Overview
What is the ICD-10 code for crepitant synovitis (acute) (chronic), right wrist?
The ICD-10-CM code for crepitant synovitis (acute) (chronic), right wrist is M70.031 (sometimes written as M70031). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M70.031 (Crepitant synovitis (acute) (chronic), wrist) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report crepitant synovitis (acute) (chronic), right wrist on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M70.031 group to?
When crepitant synovitis (acute) (chronic), right wrist is the principal diagnosis on an inpatient stay, it groups to MS-DRG 557, 558, with relative weights from 0.8873 to 1.4883 depending on complications. Higher weights mean higher Medicare reimbursement.
Can M70.031 be reported with a code from M71.9?
Not as a rule. The Excludes1 note at M70, which applies to M70.031, lists "bursitis NOS (M71.9-)". 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).
