Chapter XIII - Diseases of the musculoskeletal system and connective tissue

Question 1

Which type of injuries are classified in Chapter XIII Diseases of the musculoskeletal system and connective tissue?

Answer 1

Chronic injuries only are classified to Chapter XIII

Question 2

When must 5th characters be assigned in Chapter XIII Diseases of the musculoskeletal system and connective tissue?

Answer 2

• Where the data is present in the medical record
  and
• Where doing so adds more specific information about the site

Question 3

When is a 5th character not required in Chapter XIII Diseases of the musculoskeletal system and connective tissue?

Answer 3

• In cases where the 4 character code is already site specific and adding a 5th character will not add further specific information about the site

Question 4

When should the 5th character ‘0’ in Chapter XIII Diseases of the musculoskeletal system and connective tissue be used/not be used?

Answer 4

• Should be assigned when the condition classified at 4th character code affects more than one site
• Should not be used for conditions only affecting bilateral sites (5th character reflecting the site should be used instead)

Question 5

What different types of fracture are classified to Chapter XIII Diseases of the musculoskeletal system and connective tissue?

Answer 5

• Malunion, nonunion or delayed union fractures
• Stress fractures - caused by repeated or prolonged forces against the bone
• Pathological fractures - diseased bone (due to neoplasm, osteoporosis or osteomalacia) fracture by little or no external force

Question 6

What is a pathological fracture?

Answer 6

A fracture that occurs without significant external violence at a bone site weakened by pre-existing diseases such as tumours, osteomalacia, or osteoporosis.

Question 7

If a patient with osteoporosis or neoplastic disease has a fall resulting in a fracture, not stated to be due to the osteoporosis or neoplastic disease, how should this be coded?

Answer 7

Should be coded as a traumatic fracture (Chapter XIX + External cause) with osteoporosis or neoplastic disease coded in addition.

Question 8

How should repetitive strain injuries (RSI) be coded if confirmed to be work related?

Answer 8

M70.- Soft tissue disorder related to use, overuse and pressure
+
Z56.6 Other physical and mental strain related to work

Question 9

How should kidney damage due to non-traumatic rabdomyolysis be coded?

Answer 9

The kidney damage must be coded in addition to M62.8 Other specified disorders of muscle

Question 10

How should kidney damage due to traumatic rhabdomyolysis be coded?

Answer 10

T79.5 Traumatic anuria (only)

Question 11

How should a ‘periprosthetic/peri-implant fracture’ be coded without an identified cause?

Answer 11

M96.6 Fracture of bone following insertion of orthopaedic implant, joint prosthesis, or bone plate (only)

Question 12

How should a traumatic periprosthetic/peri-implant fracture be coded?

Answer 12

M96.6 Fracture of bone following insertion of orthopaedic implant, joint prosthesis, or bone plate
+
Chapter XX External causes of morbidity and mortality code

Question 13

How should intraoperative fractures occuring during the insertion, removal or revision of a prosthesis be coded?

Answer 13

Chapter XIX code that classifies the fractured bone
+
Chapter XX External causes of morbidity and mortality code

Question 14

What does myelopathy mean?

Answer 14

Indicates that the stated diagnosis is affecting the spinal cord.

Question 15

Which sites are excluded from the codes in the block Arthropathy M00-M25 ?

Answer 15

Arthropathies of the spine (M45-M49)