Question 1

Is M23 a billable ICD-10 code?

Accepted Answer

No, M23 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code M23 mean?

Accepted Answer

ICD-10-CM code M23 represents Internal derangement of knee. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code M23 introduced?

Accepted Answer

Code M23 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code M23?

Accepted Answer

The parent category for M23 is section:M20-M25 (Other joint disorders (M20-M25)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

What conditions are excluded from M23?

Accepted Answer

Code M23 has Type 1 Excludes (mutually exclusive conditions) including: ankylosis (M24.66); deformity of knee (M21.-); osteochondritis dissecans (M93.2). These conditions cannot be coded together with M23 as they represent different diagnoses.

M232026

Excludes13Not coded together

Excludes214Not included here

Notes1Additional information

Is M23 a billable ICD-10 code?

What does ICD-10 code M23 mean?

When was ICD-10 code M23 introduced?

What is the parent category for ICD-10 code M23?

What conditions are excluded from M23?