M25.27 – Flail joint, ankle and foot

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

Non-billable header

ICD-10-CM code M25.27

Code: M25.27 (claims format: M2527)
Description: Flail joint, 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: M25 › M25.2

Billable codes under M25.27

M25.27 is a header code and cannot be used on claims. Choose the most specific code:

M25.271 – Flail joint, right ankle and footBillable
M25.272 – Flail joint, left ankle and footBillable
M25.279 – Flail joint, unspecified ankle and footBillable

Notes inherited from parent codes

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

M25 – Other joint disorder, not elsewhere classified

Excludes2 (not included here):

abnormality of gait and mobility (R26.-)
acquired deformities of limb (M20-M21)
calcification of bursa (M71.4-)
calcification of shoulder (joint) (M75.3)
calcification of tendon (M65.2-)
difficulty in walking (R26.2)
temporomandibular joint disorder (M26.6-)

Block M20-M25

Excludes2 (not included here):

joints of the spine (M40-M54)

Index terms for M25.27

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

Related codes in M25.2

M25.20 – Flail joint, unspecified jointBillable
M25.21 – Flail joint, shoulderHeader
M25.22 – Flail joint, elbowHeader
M25.23 – Flail joint, wristHeader
M25.24 – Flail joint, handHeader
M25.25 – Flail joint, hipHeader
M25.26 – Flail joint, kneeHeader
M25.28 – Flail joint, other siteBillable

Frequently asked questions

What is ICD-10 code M25.27?

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

Is M25.27 a billable code?

No. M25.27 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M25.27 belong to?

It belongs to category M25 – Other joint disorder, not elsewhere classified.

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.