S13.171 – Dislocation of C6/C7 cervical vertebrae

ICD-10-CM 2027 diagnosis code · Injuries to the neck

Non-billable header

ICD-10-CM code S13.171

Code: S13.171 (claims format: S13171)
Description: Dislocation of C6/C7 cervical vertebrae
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: S10-S19 Injuries to the neck
Parent codes: S13 › S13.1 › S13.17

Billable codes under S13.171

S13.171 is a header code and cannot be used on claims. Choose the most specific code:

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes inherited from parent codes

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

S13 – Dislocation and sprain of joints and ligaments at neck level

Includes:

avulsion of joint or ligament at neck level
laceration of cartilage, joint or ligament at neck level
sprain of cartilage, joint or ligament at neck level
traumatic hemarthrosis of joint or ligament at neck level
traumatic rupture of joint or ligament at neck level
traumatic subluxation of joint or ligament at neck level
traumatic tear of joint or ligament at neck level

Excludes2 (not included here):

strain of muscle or tendon at neck level (S16.1)

Code also:

any associated open wound

7th character note:

The appropriate 7th character is to be added to each code from category S13

S13.1 – Subluxation and dislocation of cervical vertebrae

Excludes2 (not included here):

fracture of cervical vertebrae (S12.0-S12.3-)

Code also:

any associated:
open wound of neck (S11.-)
spinal cord injury (S14.1-)

Block S10-S19

Includes:

injuries of nape
injuries of supraclavicular region
injuries of throat

Excludes2 (not included here):

burns and corrosions (T20-T32)
effects of foreign body in esophagus (T18.1)
effects of foreign body in larynx (T17.3)
effects of foreign body in pharynx (T17.2)
effects of foreign body in trachea (T17.4)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)

Index terms for S13.171

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

Dislocation, vertebra, cervical, joint between, C6 and C7

Related codes in S13.17

S13.170 – Subluxation of C6/C7 cervical vertebraeHeader

Frequently asked questions

What is ICD-10 code S13.171?

S13.171 is the ICD-10-CM code for dislocation of C6/C7 cervical vertebrae, in the block S10-S19 (Injuries to the neck).

Is S13.171 a billable code?

No. S13.171 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S13.171 belong to?

It belongs to category S13 – Dislocation and sprain of joints and ligaments at neck level.

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.