S21.9
Non-billableOpen 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.
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)
Excludes 2
Conditions not included here, but the patient may have both
- •burns and corrosionsT20-T32
- •effects of foreign body in bronchusT17.5
- •effects of foreign body in esophagusT18.1
- •effects of foreign body in lungT17.8
- •effects of foreign body in tracheaT17.4
- •frostbiteT33-T34
- injuries of axilla
- injuries of clavicle
- injuries of scapular region
- injuries of shoulder
- •insect bite or sting, venomousT63.4
Use Additional Code
Additional codes that should follow this code
Code Also
A second code may be required; sequencing depends on circumstances
Child Codes (6)
S21.90Unspecified open wound of unspecified part of thorax
S21.91Laceration without foreign body of unsp part of thorax
S21.92Laceration with foreign body of unspecified part of thorax
S21.93Puncture wound without foreign body of unsp part of thorax
S21.94Puncture wound with foreign body of unsp part of thorax
S21.95Open bite of unspecified part of thorax
Related Codes(5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(4)
Frequently Asked Questions
What is the ICD-10 code for open wound of unspecified part of thorax?
The ICD-10-CM code for open wound of unspecified part of thorax is S21.9. The full clinical description is "Open wound of unspecified part of thorax". S21.9 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code S21.9 mean?
ICD-10-CM code S21.9 represents “Open wound of unspecified part of thorax”. It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and 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, also report: 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.
How does S21.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like open wound of unspecified part of thorax affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of S21.9?
S21.9 maps to the ICD-11 code: NA81.Z (Open wound of thorax, unspecified).
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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.