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S84.92XA vs S94

S84.92XA (Injury of unspecified nerve at lower leg level, left leg, initial encounter) compared with S94 (Injury of nerves at ankle and foot level), from the official CMS tabular data.

Summary

These codes can be reported together when both conditions are documented, because S84.92XA lists S94 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

Title wording and billing status.The titles share “Injury of”; S84.92XA says “unspecified nerve at lower leg level, left leg, initial encounter” where S94 says “nerves at ankle and foot level”. S94 is a non-billable header; S84.92XA is billable.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S84.92XA lists S94 under Excludes2: “injury of nerves at ankle and foot level (S94.-)”. 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.

Official rule

Is there an Excludes2 relationship?

Yes.S84.92XA’s tabular entry: “injury of nerves at ankle and foot level (S94.-)”. The note covers S94.

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.S94 is a non-billable header, but S84.92XA 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

S84.92XA
Injury of unspecified nerve at lower leg level, left leg, initial encounter
↔
S94
Injury of nerves at ankle and foot level

What we found

Yes, when both are documented.S84.92XA carries an Excludes2 note covering S94: “injury of nerves at ankle and foot level (S94.-)”

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

S84.92XAInjury of unspecified nerve at lower leg level, left leg, initial encounterS94Injury of nerves at ankle and foot level
Billing statusBillableNon-billable header

Report instead: S94.00XA, S94.00XD, S94.00XS, S94.01XA, S94.01XD

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)
DefinitionInjury of unspecified nerve at lower leg level, left leg, initial encounter is a billable ICD-10-CM diagnosis code (S84.92XA).Injury of nerves at ankle and foot level is a non-billable ICD-10-CM category code (S94).
7th characterThe appropriate 7th character is to be added to each code from category S84The appropriate 7th character is to be added to each code from category S94
Excludes2
injury of nerves at ankle and foot level (S94.-)
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 (S81.-)
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