ICDcodes.org
FY2027

S83.9 — Sprain of unspecified site of knee

Not billable

Is S83.9 billable?

No — S83.9 is a non-billable header code. S83.9 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath S83.9.

S83.9 at a glance

CodeS83.9
DescriptionSprain of unspecified site of knee
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

How is S83.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to S83.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Sprain › knee (joint) (ligament)

Use additional code — inherited from Chapter 19

Report an additional code alongside S83.9 to fully describe the condition. S83.9 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 S83.9, but a patient may have both at the same time. When documentation supports it, S83.9 and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from S80-S89

The conditions below are not part of S83.9, but a patient may have both at the same time. When documentation supports it, S83.9 and the excluded code may both be reported.

  • burns and corrosions (T20-T32)
  • frostbite (T33-T34)
  • injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
  • insect bite or sting, venomous (T63.4)

Excludes2 — not included here — inherited from S83

The conditions below are not part of S83.9, but a patient may have both at the same time. When documentation supports it, S83.9 and the excluded code may both be reported.

  • derangement of patella (M22.0-M22.3)
  • injury of patellar ligament (tendon) (S76.1-)
  • internal derangement of knee (M23.-)
  • old dislocation of knee (M24.36)
  • pathological dislocation of knee (M24.36)
  • recurrent dislocation of knee (M22.0)
  • strain of muscle, fascia and tendon of lower leg (S86.-)

Code also — inherited from S83

Two codes may be needed to describe the condition fully. Whether S83.9 is sequenced first depends on the reason for the encounter.

  • any associated open wound

What codes fall under S83.9? (3)

How long has S83.9 existed?

S83.9 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.

What other codes are in the S83 family? (8)