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S86.002D vs S96

S86.002D (Unspecified injury of left Achilles tendon, subsequent encounter) compared with S96 (Injury of muscle and tendon at ankle and foot level), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes can be reported together when both conditions are documented, because S86.002D lists S96 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named and billing status.S86.002D is “Unspecified injury of left Achilles tendon, subsequent encounter”; S96 is “Injury of muscle and tendon at ankle and foot level”. S96 is a non-billable header; S86.002D is billable.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S86.002D lists S96 under Excludes2: “injury of muscle, fascia and tendon at ankle (S96.-)”. 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.S86.002D’s tabular entry: “injury of muscle, fascia and tendon at ankle (S96.-)”. The note covers S96.

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.S96 is a non-billable header, but S86.002D 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

S86.002D
Unspecified injury of left Achilles tendon, subsequent encounter
↔
S96
Injury of muscle and tendon at ankle and foot level

What we found

Yes, when both are documented.S86.002D carries an Excludes2 note covering S96: “injury of muscle, fascia and tendon at ankle (S96.-)”

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 FY2027

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

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
S86.002D

Unspecified injury of left Achilles tendon, subsequent encounter

S96

Injury of muscle and tendon at ankle and foot level

StatusDiffers
S86.002D
Billable
S96
Non-billable header

A header is not reported on a claim; a code beneath it is.

Report instead: S96.001A, S96.001D, S96.001S, S96.002A, S96.002D

Excludes2Differs
S86.002D
  • injury of muscle, fascia and tendon at ankle (S96.-)
  • injury of patellar ligament (tendon) (S76.1-)
  • sprain of joints and ligaments of knee (S83.-)
  • 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)
S96
  • injury of Achilles tendon (S86.0-)
  • sprain of joints and ligaments of ankle and foot (S93.-)
  • burns and corrosions (T20-T32)
  • fracture of ankle and malleolus (S82.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
Code alsoDiffers
S86.002D
  • any associated open wound (S81.-)
S96
  • any associated open wound (S91.-)
CategoryDiffers
S86.002D

S86 Injury of muscle, fascia and tendon at lower leg level

S96

Is itself a category

ChapterSame for both

S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)

7th characterDiffers
S86.002D
  • The appropriate 7th character is to be added to each code from category S86
S96
  • The appropriate 7th character is to be added to each code from category S96

No Excludes1, Code first, Use additional code and Includes note at either code.

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. In a row that differs, notes every code shares are dimmed.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources