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S21.9

Non-billable

Open wound of unspecified part of thorax

Open wound of unspecified part of thorax

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

S20-S29

Parent Code

S21

Child Codes

6

Coding Notes

Inclusion Terms

Alternative clinical terms for this condition

  • Open wound of thoracic wall NOS

Includes

Conditions included under this code

  • injuries of breast
  • injuries of chest (wall)
  • injuries of interscapular area

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)
  • traumatic amputation (partial) of thorax (S28.1)

Excludes 2

Conditions not included here, but the patient may have both

  • burns and corrosions (T20-T32)
  • effects of foreign body in bronchus (T17.5)
  • effects of foreign body in esophagus (T18.1)
  • effects of foreign body in lung (T17.8)
  • effects of foreign body in trachea (T17.4)
  • frostbite (T33-T34)
  • injuries of axilla
  • injuries of clavicle
  • injuries of scapular region
  • injuries of shoulder
  • insect bite or sting, venomous (T63.4)

Use Additional Code

Additional codes that should follow this code

  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be required; sequencing depends on circumstances

  • any associated injury, such as:
  • injury of heart (S26.-)
  • injury of intrathoracic organs (S27.-)
  • rib fracture (S22.3-, S22.4-)
  • spinal cord injury (S24.0-, S24.1-)
  • traumatic hemopneumothorax (S27.3)
  • traumatic hemothorax (S27.1)
  • traumatic pneumothorax (S27.0)
  • wound infection

Child Codes (6)

S21.90

Unspecified open wound of unspecified part of thorax

S21.91

Laceration without foreign body of unsp part of thorax

S21.92

Laceration with foreign body of unspecified part of thorax

S21.93

Puncture wound without foreign body of unsp part of thorax

S21.94

Puncture wound with foreign body of unsp part of thorax

S21.95

Open bite of unspecified part of thorax

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is ICD-10 code S21.9?

ICD-10-CM code S21.9 represents "Open wound of unspecified part of thorax". It is a non-billable header code — use a more specific child code for billing purposes.

Is S21.9 a billable code?

No, S21.9 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under S21.9.

What chapter is S21.9 in?

S21.9 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).

What codes cannot be used with S21.9?

S21.9 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71); traumatic amputation (partial) of thorax (S28.1).

What are the subcategories under S21.9?

S21.9 has 6 child codes, including: S21.90 (Unspecified open wound of unspecified part of thorax), S21.91 (Laceration without foreign body of unsp part of thorax), S21.92 (Laceration with foreign body of unspecified part of thorax), S21.93 (Puncture wound without foreign body of unsp part of thorax), and 2 more.

Are additional codes required with S21.9?

Yes, when using S21.9 you should also code: code to identify any retained foreign body, if applicable (Z18.-).

What are the UMLS CUIs for S21.9?

S21.9 is linked to 2 UMLS Concept Unique Identifiers: C2835123, C0478235. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.