M24.27 – Disorder of ligament, ankle and foot

ICD-10-CM 2027 diagnosis code · Other joint disorders

Non-billable header

ICD-10-CM code M24.27

Code: M24.27 (claims format: M2427)
Description: Disorder of ligament, ankle and foot
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M20-M25 Other joint disorders
Parent codes: M24 › M24.2

Billable codes under M24.27

M24.27 is a header code and cannot be used on claims. Choose the most specific code:

M24.271 – Disorder of ligament, right ankleBillable
M24.272 – Disorder of ligament, left ankleBillable
M24.273 – Disorder of ligament, unspecified ankleBillable
M24.274 – Disorder of ligament, right footBillable
M24.275 – Disorder of ligament, left footBillable
M24.276 – Disorder of ligament, unspecified footBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M24 – Other specific joint derangements

Excludes1 (not coded here):

current injury - see injury of joint by body region

Excludes2 (not included here):

ganglion (M67.4)
snapping knee (M23.8-)
temporomandibular joint disorders (M26.6-)

M24.2 – Disorder of ligament

Applicable to:

Instability secondary to old ligament injury
Ligamentous laxity NOS

Excludes1 (not coded here):

familial ligamentous laxity (M35.7)

Excludes2 (not included here):

internal derangement of knee (M23.5-M23.8X9)

Block M20-M25

Excludes2 (not included here):

joints of the spine (M40-M54)

Index terms for M24.27

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in M24.2

M24.20 – Disorder of ligament, unspecified siteBillable
M24.21 – Disorder of ligament, shoulderHeader
M24.22 – Disorder of ligament, elbowHeader
M24.23 – Disorder of ligament, wristHeader
M24.24 – Disorder of ligament, handHeader
M24.25 – Disorder of ligament, hipHeader
M24.28 – Disorder of ligament, vertebraeBillable
M24.29 – Disorder of ligament, other specified siteBillable

Frequently asked questions

What is ICD-10 code M24.27?

M24.27 is the ICD-10-CM code for disorder of ligament, ankle and foot, in the block M20-M25 (Other joint disorders).

Is M24.27 a billable code?

No. M24.27 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M24.27 belong to?

It belongs to category M24 – Other specific joint derangements.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.