S91
Non-billableOpen wound of ankle, foot and toes
Open wound of ankle, foot and toes
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Status
Non-billable / Header
Block
S90-S99
Child Codes
4
Coding Notes
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
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 wound infection
7th Character Definitions
- A - initial encounter
- D - subsequent encounter
- S - sequela
Child Codes (4)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code S91?
ICD-10-CM code S91 represents "Open wound of ankle, foot and toes". It is a non-billable header code — use a more specific child code for billing purposes.
Is S91 a billable code?
No, S91 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under S91.
What chapter is S91 in?
S91 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with S91?
S91 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71); open fracture of ankle, foot and toes (S92.-with 7th character B); and 1 more.
What are the subcategories under S91?
S91 has 4 child codes, including: S91.0 (Open wound of ankle), S91.1 (Open wound of toe without damage to nail), S91.2 (Open wound of toe with damage to nail), S91.3 (Open wound of foot).
Are additional codes required with S91?
Yes, when using S91 you should also code: code to identify any retained foreign body, if applicable (Z18.-).
What are the UMLS CUIs for S91?
S91 is linked to 1 UMLS Concept Unique Identifier: C2866481. 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.