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Injury, poisoning and certain other consequences of external causes (S00-T88)

Note:: Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

Use additional: code to identify any retained foreign body, if applicable (Z18.-)
Excludes 1:: birth trauma (P10-P15)
obstetric trauma (O70-O71)

Injuries to the elbow and forearm (S50-S59)

Excludes 2:: burns and corrosions (T20-T32)
frostbite (T33-T34)
injuries of wrist and hand (S60-S69)
insect bite or sting, venomous (T63.4)

S50

Superficial injury of elbow and forearm [+]

Excludes 2:	superficial injury of wrist and hand (S60.-)
The appropriate 7th character is to be added to each code from category S50 A - initial encounter D - subsequent encounter S - sequela

S51

Open wound of elbow and forearm [+]

Code also	any associated wound infection
Excludes 1:	open fracture of elbow and forearm (S52.- with open fracture 7th character) traumatic amputation of elbow and forearm (S58.-)
Excludes 2:	open wound of wrist and hand (S61.-)
The appropriate 7th character is to be added to each code from category S51 A - initial encounter D - subsequent encounter S - sequela

S52

Fracture of forearm [+]

Note:

A fracture not indicated as displaced or nondisplaced should be coded to displaced
A fracture not indicated as open or closed should be coded to closed
The open fracture designations are based on the Gustilo open fracture classification

Excludes 1:	traumatic amputation of forearm (S58.-)
Excludes 2:	fracture at wrist and hand level (S62.-) periprosthetic fracture around internal prosthetic elbow joint (M97.4)
The appropriate 7th character is to be added to all codes from category S52 A - initial encounter for closed fracture B - initial encounter for open fracture type I or II C - initial encounter for open fracture type IIIA, IIIB, or IIIC D - subsequent encounter for closed fracture with routine healing E - subsequent encounter for open fracture type I or II with routine healing F - subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing G - subsequent encounter for closed fracture with delayed healing H - subsequent encounter for open fracture type I or II with delayed healing J - subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing K - subsequent encounter for closed fracture with nonunion M - subsequent encounter for open fracture type I or II with nonunion N - subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion P - subsequent encounter for closed fracture with malunion Q - subsequent encounter for open fracture type I or II with malunion R - subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion S - sequela

S53

Dislocation and sprain of joints and ligaments of elbow [+]

Includes:	avulsion of joint or ligament of elbow laceration of cartilage, joint or ligament of elbow sprain of cartilage, joint or ligament of elbow traumatic hemarthrosis of joint or ligament of elbow traumatic rupture of joint or ligament of elbow traumatic subluxation of joint or ligament of elbow traumatic tear of joint or ligament of elbow
Code also	any associated open wound
Excludes 2:	strain of muscle, fascia and tendon at forearm level (S56.-)
The appropriate 7th character is to be added to each code from category S53 A - initial encounter D - subsequent encounter S - sequela

S54

Injury of nerves at forearm level [+]

Code also	any associated open wound (S51.-)
Excludes 2:	injury of nerves at wrist and hand level (S64.-)
The appropriate 7th character is to be added to each code from category S54 A - initial encounter D - subsequent encounter S - sequela

S55

Injury of blood vessels at forearm level [+]

Code also	any associated open wound (S51.-)
Excludes 2:	injury of blood vessels at wrist and hand level (S65.-) injury of brachial vessels (S45.1-S45.2)
The appropriate 7th character is to be added to each code from category S55 A - initial encounter D - subsequent encounter S - sequela

S56

Injury of muscle, fascia and tendon at forearm level [+]

Code also	any associated open wound (S51.-)
Excludes 2:	injury of muscle, fascia and tendon at or below wrist (S66.-) sprain of joints and ligaments of elbow (S53.4-)
The appropriate 7th character is to be added to each code from category S56 A - initial encounter D - subsequent encounter S - sequela

S57

Crushing injury of elbow and forearm [+]

Use additional	code(s) for all associated injuries
Excludes 2:	crushing injury of wrist and hand (S67.-)
The appropriate 7th character is to be added to each code from category S57 A - initial encounter D - subsequent encounter S - sequela

S58

Traumatic amputation of elbow and forearm [+]
An amputation not identified as partial or complete should be coded to complete

Excludes 1:	traumatic amputation of wrist and hand (S68.-)
The appropriate 7th character is to be added to each code from category S58 A - initial encounter D - subsequent encounter S - sequela

S59

Other and unspecified injuries of elbow and forearm [+]

Excludes 2:	other and unspecified injuries of wrist and hand (S69.-)
The appropriate 7th character is to be added to each code from subcategories S59.0, S59.1, and S59.2 A - initial encounter for closed fracture D - subsequent encounter for fracture with routine healing G - subsequent encounter for fracture with delayed healing K - subsequent encounter for fracture with nonunion P - subsequent encounter for fracture with malunion S - sequela