S98Not billable, use a more specific code below

Traumatic amputation of ankle and foot

In Injuries to the ankle and foot (S90-S99), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes

108 billable codes under S98: 18 are a CC; 18 map to HCC 405 (Traumatic Amputations and Complications).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

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Instructional notes

Includes: conditions that are coded here

  • An amputation not identified as partial or complete should be coded to complete

Also applies, from Injuries to the ankle and foot (S90-S99)

These notes sit on S90-S99 and apply to every code under it, including S98.

Excludes2: not included here, code separately if applicable

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

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers 7th character use and coding of injuries, fractures, burns, drug and toxic effects, abuse and neglect, and complications of care (S00-T88).

Read Section I.C.19 (page 77)

All codes under S98

S98 can't be used on a claim. Pick a billable code below; grey headings group them.

S98 MS-DRGs

As the principal diagnosis, the billable codes under S98 group to these 10 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to S98

Notes on these codes point to S98.

  • S88 Excludes1: traumatic amputation of ankle and foot (S98.-)
  • S91 Excludes1: traumatic amputation of ankle and foot (S98.-)
  • S92 Excludes2: traumatic amputation of ankle and foot (S98.-)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Foot Injuries and Disorders

Each of your feet has 26 bones, 33 joints, and more than 100 tendons, muscles, and ligaments. No wonder a lot of things can go wrong. Here are a few common problems:

Read more about foot injuries and disorders on MedlinePlus

Limb Loss

People can lose all or part of an arm or leg for many reasons. Common ones include: Some amputees have phantom pain, which is the feeling of pain in the missing limb. Other physical problems include surgical complications and skin problems if you wear an artificial limb. Many amputees use an artificial limb. Learning how to use it takes time. Physical therapy can help you adapt.

Read more about limb loss on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.