S92.31 – Fracture of first metatarsal bone

ICD-10-CM 2027 diagnosis code · Injuries to the ankle and foot

Non-billable header

ICD-10-CM code S92.31

Code: S92.31 (claims format: S9231)
Description: Fracture of first metatarsal bone
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: S90-S99 Injuries to the ankle and foot
Parent codes: S92 › S92.3

Billable codes under S92.31

S92.31 is a header code and cannot be used on claims. Choose the most specific code:

S92.311 – Displaced fracture of first metatarsal bone, right footHeader (more codes below)
S92.312 – Displaced fracture of first metatarsal bone, left footHeader (more codes below)
S92.313 – Displaced fracture of first metatarsal bone, unspecified footHeader (more codes below)
S92.314 – Nondisplaced fracture of first metatarsal bone, right footHeader (more codes below)
S92.315 – Nondisplaced fracture of first metatarsal bone, left footHeader (more codes below)
S92.316 – Nondisplaced fracture of first metatarsal bone, unspecified footHeader (more codes below)

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

Character	Meaning
`A`	initial encounter for closed fracture
`B`	initial encounter for open fracture
`D`	subsequent encounter for fracture with routine healing
`G`	subsequent encounter for fracture with delayed healing
`K`	subsequent encounter for fracture with nonunion
`P`	subsequent encounter for fracture with malunion
`S`	sequela

Notes inherited from parent codes

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

S92 – Fracture of foot and toe, except ankle

Excludes2 (not included here):

fracture of ankle (S82.-)
fracture of malleolus (S82.-)
traumatic amputation of ankle and foot (S98.-)

Notes:

A fracture not indicated as displaced or nondisplaced should be coded to displaced
A fracture not indicated as open or closed should be coded to closed

7th character note:

The appropriate 7th character is to be added to each code from category S92

S92.3 – Fracture of metatarsal bone(s)

Excludes2 (not included here):

Physeal fracture of metatarsal (S99.1-)

Block S90-S99

Excludes2 (not included here):

burns and corrosions (T20-T32)
fracture of ankle and malleolus (S82.-)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)

Index terms for S92.31

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

Related codes in S92.3

Frequently asked questions

What is ICD-10 code S92.31?

S92.31 is the ICD-10-CM code for fracture of first metatarsal bone, in the block S90-S99 (Injuries to the ankle and foot).

Is S92.31 a billable code?

No. S92.31 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S92.31 belong to?

It belongs to category S92 – Fracture of foot and toe, except ankle.

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.