CAISS - Lower Extremity / Pelvis / Buttocks
Chapter Exam Questions and Answers with
Verified Solutions | Latest Updated 2026
What code to use if only vague Injuries to the Lower Extremity NFS
descriptions are available?
What is included in "Whole Area" Traumatic amputation (partial or complete)
Compartment syndrome
Crush injury/massive destruction
Degloving
Penetrating injury
Skin/subcutaneous/muscle
What are the two types of partial
amputations complete
What code to use for amputations Traumatic amputation, partial or complete
if 811000.3
it is between hip and foot but NFS *does not apply to feet/toes
as
to specific anatomical site
When to use compartment only if no other specific injuries to the LE is
syndrome codes documented
What are the two types of no muscle loss
compartment syndrome with muscle loss
classifications
, What must a crush injury involve? massive destruction of skeletal, vascular,
nervous
and tissue systems
*do not use NFS code for feet/toes
What body region to degloving External body region for calculating ISS
injuries get coded to?
Regions degloving can be entire extremity
contained thigh/calf
to knee/ankle/foot
toe (single/multiple)
closed degloving injury (Morel-Lavellee)
What does Morel-Lavellee apply closed degloving injuries
to?
How to code a penetrating injury coded as open fracture to the specific
involving a bone bone
Where does the descriptor superficial/minor
"peppering" fall under
Regions penetrating injury can be? at hip or buttock
at or above knee (below hip)
below knee, at or above ankle
foot
great toe
lesser toe
Chapter Exam Questions and Answers with
Verified Solutions | Latest Updated 2026
What code to use if only vague Injuries to the Lower Extremity NFS
descriptions are available?
What is included in "Whole Area" Traumatic amputation (partial or complete)
Compartment syndrome
Crush injury/massive destruction
Degloving
Penetrating injury
Skin/subcutaneous/muscle
What are the two types of partial
amputations complete
What code to use for amputations Traumatic amputation, partial or complete
if 811000.3
it is between hip and foot but NFS *does not apply to feet/toes
as
to specific anatomical site
When to use compartment only if no other specific injuries to the LE is
syndrome codes documented
What are the two types of no muscle loss
compartment syndrome with muscle loss
classifications
, What must a crush injury involve? massive destruction of skeletal, vascular,
nervous
and tissue systems
*do not use NFS code for feet/toes
What body region to degloving External body region for calculating ISS
injuries get coded to?
Regions degloving can be entire extremity
contained thigh/calf
to knee/ankle/foot
toe (single/multiple)
closed degloving injury (Morel-Lavellee)
What does Morel-Lavellee apply closed degloving injuries
to?
How to code a penetrating injury coded as open fracture to the specific
involving a bone bone
Where does the descriptor superficial/minor
"peppering" fall under
Regions penetrating injury can be? at hip or buttock
at or above knee (below hip)
below knee, at or above ankle
foot
great toe
lesser toe
