S13.100S — Subluxation of unspecified cervical vertebrae, sequela

BillableUnspecified

Is S13.100S billable?

Yes, but S13.100S is an unspecified code. S13.100S is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S13.100S is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting S13.100S — the more specific alternatives are listed below.

More specific alternatives

S13.100S at a glance

Code	S13.100S
Description	Subluxation of unspecified cervical vertebrae, sequela
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027
7th character "S"	sequela

What does the 7th character "S" mean in S13.100S?

In S13.100S, the 7th character S means sequela. The 7th character is required for S13.100S to be a valid, complete code.

Same condition, different episode of care — switch the 7th character:

Which MS-DRGs does S13.100S group to?

S13.100S sits in MDC 08 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

562Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCCmedical
563Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCCmedical

How is S13.100S listed in the Alphabetic Index?

The Alphabetic Index lists these routes under S13.100, the nearest indexed parent of S13.100S. Use them to find the family, then select the specific code.

Subluxation › vertebral › traumatic › cervical

Use additional code — inherited from Chapter 19

Report an additional code alongside S13.100S to fully describe the condition. S13.100S is sequenced first.

code to identify any retained foreign body, if applicable (Z18.-)

Excludes2 — not included here — inherited from Chapter 19

The conditions below are not part of S13.100S, but a patient may have both at the same time. When documentation supports it, S13.100S and the excluded code may both be reported.

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Excludes2 — not included here — inherited from S10-S19

The conditions below are not part of S13.100S, but a patient may have both at the same time. When documentation supports it, S13.100S and the excluded code may both be reported.

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)

Excludes2 — not included here — inherited from S13

The conditions below are not part of S13.100S, but a patient may have both at the same time. When documentation supports it, S13.100S and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from S13.1

The conditions below are not part of S13.100S, but a patient may have both at the same time. When documentation supports it, S13.100S and the excluded code may both be reported.

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

Code also — inherited from S13

Two codes may be needed to describe the condition fully. Whether S13.100S is sequenced first depends on the reason for the encounter.

any associated open wound

Code also — inherited from S13.1

Two codes may be needed to describe the condition fully. Whether S13.100S is sequenced first depends on the reason for the encounter.

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

How long has S13.100S existed?

S13.100S has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.