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S82.66XA

✓ Billable

Nondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for closed fracture

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

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

S82.6
  • • pilon fracture of distal tibia (S82.87-)
S82
  • • traumatic amputation of lower leg (S88.-)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

S82
  • • fracture of foot, except ankle (S92.-)
  • • periprosthetic fracture around internal prosthetic ankle joint (M97.2)
  • • periprosthetic fracture around internal prosthetic implant of knee joint (M97.1-)

Clinical Description

ICD-10-CM code S82.66XA represents nondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for closed fracture. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory. Coders should note that S82.66XA has 2 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code S82.66XA?

ICD-10-CM code S82.66XA is "Nondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for closed fracture". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is S82.66XA a billable ICD-10 code?

Yes, S82.66XA is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with S82.66XA?

S82.66XA has 2 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can S82.66XA be coded with other codes?

S82.66XA has 3 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in S82.66

Other codes in the same category that may be relevant for differential coding:

S82.66XBNondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for open fracture type I or IIS82.66XCNondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for open fracture type IIIA, IIIB, or IIICS82.66XDNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with routine healingS82.66XENondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type I or II with routine healingS82.66XFNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healingS82.66XGNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with delayed healingS82.66XHNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type I or II with delayed healingS82.66XJNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healingS82.66XKNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with nonunionS82.66XMNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type I or II with nonunionS82.66XNNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunionS82.66XPNondisplaced fracture of lateral malleolus of unspecified fibula, subsequent encounter for closed fracture with malunion

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Code Information

CodeS82.66XA
BillableYes
ParentS82.66
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes12 rule(s)
Excludes23 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)