2026 ICD-10-CM Diagnosis Code M26.56Non-working side interference
ICD-10-CM Codes›M00–M99›M26-M27›M26
- Billable — Valid for Submission
- Not Chronic
M26.56 is a billable ICD-10-CM diagnosis code for non-working side interference. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 157 through 159. Coders also document this condition as balancing interference. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury, Disorders of jaw, and Disorders of teeth and gingiva.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Balancing interference
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Balancing side interference
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Balancing side interference - M26.56
- balancing side - M26.56
- non-working side - M26.56
- Non-working side interference - M26.56
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Balancing side interference
- Interference
- balancing side
- Interference
- non-working side
- Non-working side interference
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Jaw Injuries and Disorders
Your jaw is a set of bones that holds your teeth. It includes:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M26.56 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M26.56Overview
Is M26.56 (Dentofacial functional abnormalities) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report non-working side interference on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does M26.56 group to?
When non-working side interference is the principal diagnosis on an inpatient stay, it groups to MS-DRG 157, 158, 159, with relative weights from 0.7085 to 1.7168 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of M26.56?
Under the General Equivalence Mappings, non-working side interference converts to ICD-9-CM 524.56 (nonwork side interfrnce). The mapping is a direct match.
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.
