ICDcodes.org
FY2027

S02.80XK — Fracture of other specified skull and facial bones, unspecified side, subsequent encounter for fracture with nonunion

BillableUnspecifiedCC

Is S02.80XK billable?

Yes, but S02.80XK will trip a Medicare edit. S02.80XK is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, CMS lists S02.80XK under Medicare Code Editor edit 20, “Unspecified code” — meaning a code specifying laterality (right, left or bilateral) exists in the same family. On an inpatient claim this triggers the edit, because CMS holds that there are very limited circumstances in which laterality cannot be documented.

S02.80XK at a glance

CodeS02.80XK
DescriptionFracture of other specified skull and facial bones, unspecified side, subsequent encounter for fracture with nonunion
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027
7th character "K"subsequent encounter for fracture with nonunion

What does the 7th character "K" mean in S02.80XK?

In S02.80XK, the 7th character K means subsequent encounter for fracture with nonunion. The 7th character is required for S02.80XK to be a valid, complete code.

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

What Medicare edits apply to S02.80XK?

The Medicare Code Editor screens inpatient claims before they are grouped. These edits name S02.80XK directly.

Unspecified — a laterality-specific code exists — MCE edit 20

A code specifying laterality (right, left or bilateral) exists in the same family. CMS holds that there are very limited circumstances in which laterality cannot be documented.

Which MS-DRGs does S02.80XK group to?

S02.80XK sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 564Other Musculoskeletal System and Connective Tissue Diagnoses with MCCmedical
  • 565Other Musculoskeletal System and Connective Tissue Diagnoses with CCmedical
  • 566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCCmedical

As a secondary diagnosis, S02.80XK is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is S02.80XK listed in the Alphabetic Index?

The Alphabetic Index lists these routes under S02.8, the nearest indexed parent of S02.80XK. Use them to find the family, then select the specific code.

  • Fracture, traumatic › palate (abduction) (adduction) (separation)
  • Fracture, traumatic › skull › specified site NEC (abduction) (adduction) (separation)

Use additional code — inherited from Chapter 19

Report an additional code alongside S02.80XK to fully describe the condition. S02.80XK 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 S02.80XK, but a patient may have both at the same time. When documentation supports it, S02.80XK and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from S00-S09

The conditions below are not part of S02.80XK, but a patient may have both at the same time. When documentation supports it, S02.80XK and the excluded code may both be reported.

  • burns and corrosions (T20-T32)
  • effects of foreign body in ear (T16)
  • effects of foreign body in larynx (T17.3)
  • effects of foreign body in mouth NOS (T18.0)
  • effects of foreign body in nose (T17.0-T17.1)
  • effects of foreign body in pharynx (T17.2)
  • effects of foreign body on external eye (T15.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)

Excludes2 — not included here — inherited from S02.8

The conditions below are not part of S02.80XK, but a patient may have both at the same time. When documentation supports it, S02.80XK and the excluded code may both be reported.

  • fracture of orbital floor (S02.3-)
  • fracture of orbital roof (S02.12-)

Code also — inherited from S00-S09

Two codes may be needed to describe the condition fully. Whether S02.80XK is sequenced first depends on the reason for the encounter.

  • for any associated infection

Code also — inherited from S02

Two codes may be needed to describe the condition fully. Whether S02.80XK is sequenced first depends on the reason for the encounter.

  • any associated intracranial injury (S06.-)

How long has S02.80XK existed?

S02.80XK first appears in FY2018 (FY2017 is not available, so it may have appeared then).

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