S93.50 ICD-10-CM Code: Unspecified sprain of toe

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for S93.50 in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on S93.50 itself; “inherited from” names the category or block whose note applies here.

7th Character Guide

"The appropriate 7th character is to be added to each code from category S93"

• A — initial encounter
• D — subsequent encounter
• S — sequela

How the encounter character is assigned. “Initial encounter” means the patient is receiving active treatment for the condition — it is not limited to the first visit, and a different or new provider giving active treatment still assigns it. “Subsequent encounter” covers care during the healing or recovery phase after active treatment. “Sequela” is for complications or conditions that arise as a direct result of the original condition.

ICD-10-CM Official Guidelines for Coding and Reporting, Section I.C.19.a (paraphrased by MedCoder).

Variant codes in this family

S93.501A, S93.501D, S93.501S, S93.502A, S93.502D, S93.502S, S93.503A, S93.503D

Character meanings are CMS's official 7th-character extensions for this family, as carried in each variant code's official description; variant codes are registry rows. The explanation of how the encounter character is assigned is MedCoder editorial, distinct from the official content above it.

Do Not Confuse With

Codes named in S93.50's own official notes, or sharing its encounter family, with what separates them. Each links to the full comparison.

• S93.501A— Encounter relationship (Review)

  Same underlying diagnosis, different encounter phase.

  The same diagnosis at a different phase of care; one encounter takes one 7th character.

  Full comparison: S93.50 vs S93.501A →

• S93.501D— Encounter relationship (Review)

  Same underlying diagnosis, different encounter phase.

  The same diagnosis at a different phase of care; one encounter takes one 7th character.

  Full comparison: S93.50 vs S93.501D →

• S96— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  Full comparison: S93.50 vs S96 →

• T20— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  Full comparison: S93.50 vs T20 →

• T32— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  Full comparison: S93.50 vs T32 →

• S82— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  Full comparison: S93.50 vs S82 →

Relationships are read from this code's own official notes and its encounter family; the wording of each distinction is MedCoder editorial. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Decision Points

The directives on this code's own record, as a pre-claim checklist.

1. A 7th character applies in this family. Confirm the documented encounter matches the character assigned. See the official 7th-character definitions and this code’s variants
2. 1 Code Also note — a second code may apply; the guidelines leave its sequencing to the circumstances of the encounter. See the Code Also notes
3. 5 Excludes2 entries — those conditions are not part of this code and may be reported additionally when documented. See the Excludes2 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

Verify Before Coding

• Not billable as written — a more specific code is required: S93.501A, S93.501D, S93.501S, S93.502A, S93.502D.
• Requires a 7th character. "The appropriate 7th character is to be added to each code from category S93" Options: S93.501A, S93.501D, S93.501S, S93.502A, S93.502D, S93.502S

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

Other codes that name S93.50 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 13 Excludes2 notes: S80 — Superficial injury of knee and lower leg (via S93.-), S80-S89 — Injuries to the knee and lower leg (S80-S89) (via S93.-), S81 — Open wound of knee and lower leg (via S93.-), S82 — Fracture of lower leg, including ankle (via S93.-), S83 — Dislocation and sprain of joints and ligaments of knee (via S93.-), S84 — Injury of nerves at lower leg level (via S93.-), S85 — Injury of blood vessels at lower leg level (via S93.-), S86 — Injury of muscle, fascia and tendon at lower leg level (via S93.-), S87 — Crushing injury of lower leg (via S93.-), S88 — Traumatic amputation of lower leg (via S93.-), S89 — Other and unspecified injuries of lower leg (via S93.-), S93.6 — Sprain of foot (via S93.5.-), S96 — Injury of muscle and tendon at ankle and foot level (via S93.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Related Codes

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Sprain”; these codes share that main term but sit in a different category of the Tabular List.

S63.63 — Sprain of interphalangeal joint of other and unspecified finger(s) (finger, interphalangeal), S63.64 — Sprain of metacarpophalangeal joint of thumb (thumb, metacarpophalangeal), S63.65 — Sprain of metacarpophalangeal joint of other and unspecified finger(s) (finger, metacarpophalangeal), S63.68 — Other sprain of thumb (thumb, specified site NEC), S63.69 — Other sprain of other and unspecified finger(s) (finger, specified site NEC), S63.9 — Sprain of unspecified part of wrist and hand (hand), S73.10 — Unspecified sprain of hip (hip), S73.11 — Iliofemoral ligament sprain of hip (hip, iliofemoral ligament), S73.12 — Ischiocapsular (ligament) sprain of hip (hip, ischiocapsular), S73.19 — Other sprain of hip (hip, specified NEC), S76.11 — Strain of quadriceps muscle, fascia and tendon (patellar ligament), S83.40 — Sprain of unspecified collateral ligament of knee (knee, collateral ligament), S83.41 — Sprain of medial collateral ligament of knee (knee, medialcollateral ligament), S83.42 — Sprain of lateral collateral ligament of knee (knee, lateralcollateral ligament), S83.50 — Sprain of unspecified cruciate ligament of knee (knee, cruciate ligament), S83.51 — Sprain of anterior cruciate ligament of knee (knee, cruciate ligament, anterior), S83.52 — Sprain of posterior cruciate ligament of knee (knee, cruciate ligament, posterior), S83.6 — Sprain of the superior tibiofibular joint and ligament (knee, superior tibiofibular joint), S83.8X — Sprain of other specified parts of knee (knee, specified site NEC), S83.9 — Sprain of unspecified site of knee (knee), +40 more

Contextual Map

Every relationship of S93.50 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run S93.50 with these 8 related codes in Claim Check

Hierarchy

• S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes2 notes (13)

• S80 — Superficial injury of knee and lower leg[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S80-S89 — Injuries to the knee and lower leg (S80-S89)[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S81 — Open wound of knee and lower leg[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S82 — Fracture of lower leg, including ankle[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S83 — Dislocation and sprain of joints and ligaments of knee[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S84 — Injury of nerves at lower leg level[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S85 — Injury of blood vessels at lower leg level[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S86 — Injury of muscle, fascia and tendon at lower leg level[Excludes2](via S93.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• and 5 more

Nearest codes (40)

• S93 — Dislocation and sprain of joints and ligaments at ankle, foot and toe level[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S93.432D — Sprain of tibiofibular ligament of left ankle, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S93.432S — Sprain of tibiofibular ligament of left ankle, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S93.439 — Sprain of tibiofibular ligament of unspecified ankle[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S93.439A — Sprain of tibiofibular ligament of unspecified ankle, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S93.439D — Sprain of tibiofibular ligament of unspecified ankle, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S93.439S — Sprain of tibiofibular ligament of unspecified ankle, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S93.49 — Sprain of other ligament of ankle[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 32 more

Change history

• FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Common coding questions

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S93.50 in its code family, with their registry titles.

• S93.499 — Sprain of other ligament of unspecified ankle
• S93.499A — Sprain of other ligament of unspecified ankle, initial encounter
• S93.499D — Sprain of other ligament of unspecified ankle, subsequent encounter
• S93.499S — Sprain of other ligament of unspecified ankle, sequela
• S93.5 — Sprain of toe
• S93.501 — Unspecified sprain of right great toe
• S93.501A — Unspecified sprain of right great toe, initial encounter
• S93.501D — Unspecified sprain of right great toe, subsequent encounter
• S93.501S — Unspecified sprain of right great toe, sequela
• S93.502 — Unspecified sprain of left great toe

View all codes in the S93 family