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S82 vs S94.91XD

S82 (Fracture of lower leg, including ankle) compared with S94.91XD (Injury of unspecified nerve at ankle and foot level, right leg, subsequent encounter), from the official CMS tabular data.

Summary

These codes can be reported together when both conditions are documented, because S82 lists S94.91XD under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named and billing status.S82 is “Fracture of lower leg, including ankle”; S94.91XD is “Injury of unspecified nerve at ankle and foot level, right leg, subsequent encounter”. S82 is a non-billable header; S94.91XD is billable.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S82 lists S94.91XD under Excludes2: “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. S82 carries 1 Excludes1 note covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

Yes.S82’s tabular entry: “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”. The note covers S94.91XD.

Official ruleGuide: Excludes1 vs Excludes2

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

One is a header.S82 is a non-billable header, but S94.91XD is not one of its subdivisions.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

S82
Fracture of lower leg, including ankle
↔
S94.91XD
Injury of unspecified nerve at ankle and foot level, right leg, subsequent encounter

What we found

Yes, when both are documented.S82 carries an Excludes2 note covering S94.91XD: “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2026

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

S82Fracture of lower leg, including ankleS94.91XDInjury of unspecified nerve at ankle and foot level, right leg, subsequent encounter
Billing statusNon-billable header

Report instead: S82.001A, S82.001B, S82.001C, S82.001D, S82.001E

Billable
ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionFracture of lower leg, including ankle is a non-billable ICD-10-CM category code (S82).Injury of unspecified nerve at ankle and foot level, right leg, subsequent encounter is a billable ICD-10-CM diagnosis code (S94.91XD).
7th characterThe appropriate 7th character is to be added to all codes from category S82The appropriate 7th character is to be added to each code from category S94
Includes
fracture of malleolus
—
Excludes1
traumatic amputation of lower leg (S88.-)
—
Excludes2
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-)
burns and corrosions (T20-T32)
frostbite (T33-T34)
injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
insect bite or sting, venomous (T63.4)
burns and corrosions (T20-T32)
fracture of ankle and malleolus (S82.-)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)
Code also—
any associated open wound (S91.-)

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.

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Derived from the official CMS ICD-10-CM tabular data (FY2026). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources