S98.22 ICD-10-CM Code: Partial traumatic amputation of two or more lesser toes

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for S98.22 in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on S98.22 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 S98"

• 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

S98.221A, S98.221D, S98.221S, S98.222A, S98.222D, S98.222S, S98.229A, S98.229D

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 S98.22's own official notes, or sharing its encounter family, with what separates them. Each links to the full comparison.

• S98.221A— 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: S98.22 vs S98.221A →

• S98.221D— 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: S98.22 vs S98.221D →

• T20— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

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

  Full comparison: S98.22 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: S98.22 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: S98.22 vs S82 →

• T33— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

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

  Full comparison: S98.22 vs T33 →

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.

Verify Before Coding

• Not billable as written — a more specific code is required: S98.221A, S98.221D, S98.221S, S98.222A, S98.222D.
• Requires a 7th character. "The appropriate 7th character is to be added to each code from category S98" Options: S98.221A, S98.221D, S98.221S, S98.222A, S98.222D, S98.222S

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 S98.22 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 2 Excludes1 notes: S88 — Traumatic amputation of lower leg (via S98.-), S91 — Open wound of ankle, foot and toes (via S98.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 12 Excludes2 notes: S80 — Superficial injury of knee and lower leg (via S98.-), S80-S89 — Injuries to the knee and lower leg (S80-S89) (via S98.-), S81 — Open wound of knee and lower leg (via S98.-), S82 — Fracture of lower leg, including ankle (via S98.-), S83 — Dislocation and sprain of joints and ligaments of knee (via S98.-), S84 — Injury of nerves at lower leg level (via S98.-), S85 — Injury of blood vessels at lower leg level (via S98.-), S86 — Injury of muscle, fascia and tendon at lower leg level (via S98.-), S87 — Crushing injury of lower leg (via S98.-), S88 — Traumatic amputation of lower leg (via S98.-), S89 — Other and unspecified injuries of lower leg (via S98.-), S92 — Fracture of foot and toe, except ankle (via S98.-).

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 “Amputation”; these codes share that main term but sit in a different category of the Tabular List.

S68.42 — Partial traumatic amputation of hand at wrist level (traumatic, hand, partial), S68.51 — Complete traumatic transphalangeal amputation of thumb (traumatic, thumb, transphalangeal), S68.52 — Partial traumatic transphalangeal amputation of thumb (traumatic, thumb, transphalangeal, partial), S68.61 — Complete traumatic transphalangeal amputation of other and unspecified finger(s) (traumatic, finger, transphalangeal), S68.62 — Partial traumatic transphalangeal amputation of other and unspecified finger (traumatic, finger, transphalangeal, partial), S68.71 — Complete traumatic transmetacarpal amputation of hand (traumatic, hand, transmetacarpal), S68.72 — Partial traumatic transmetacarpal amputation of hand (traumatic, hand, transmetacarpal, partial), S78.01 — Complete traumatic amputation at hip joint (traumatic, hip, at hip joint), S78.02 — Partial traumatic amputation at hip joint (traumatic, hip, at hip joint, partial), S78.11 — Complete traumatic amputation at level between hip and knee (traumatic, hip, between hip and knee), S78.12 — Partial traumatic amputation at level between hip and knee (traumatic, hip, between hip and knee, partial), S78.91 — Complete traumatic amputation of hip and thigh, level unspecified (traumatic, hip), S78.92 — Partial traumatic amputation of hip and thigh, level unspecified (traumatic, hip, partial), S88.01 — Complete traumatic amputation at knee level (traumatic, leg, at knee level), S88.02 — Partial traumatic amputation at knee level (traumatic, leg, at knee level, partial), S88.11 — Complete traumatic amputation at level between knee and ankle (traumatic, leg, between knee and ankle), S88.12 — Partial traumatic amputation at level between knee and ankle (traumatic, leg, between knee and ankle, partial), S88.91 — Complete traumatic amputation of lower leg, level unspecified (traumatic, leg), S88.92 — Partial traumatic amputation of lower leg, level unspecified (traumatic, leg, partial), Z89.9 — Acquired absence of limb, unspecified (stump, healed or old NOS), +33 more

Contextual Map

Every relationship of S98.22 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 S98.22 with these 10 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 Excludes1 notes

• S88 — Traumatic amputation of lower leg[Excludes1](via S98.-): “traumatic amputation of ankle and foot (S98.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S91 — Open wound of ankle, foot and toes[Excludes1](via S98.-): “traumatic amputation of ankle and foot (S98.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes (12)

• S80 — Superficial injury of knee and lower leg[Excludes2](via S98.-): “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 S98.-): “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 S98.-): “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 S98.-): “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 S98.-): “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 S98.-): “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 S98.-): “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 S98.-): “injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• and 4 more

Nearest codes (40)

• S98 — Traumatic amputation of ankle and foot[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S98.142D — Partial traumatic amputation of one left lesser toe, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S98.142S — Partial traumatic amputation of one left lesser toe, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S98.149 — Partial traumatic amputation of one unspecified lesser toe[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S98.149A — Partial traumatic amputation of one unspecified lesser toe, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S98.149D — Partial traumatic amputation of one unspecified lesser toe, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S98.149S — Partial traumatic amputation of one unspecified lesser toe, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S98.2 — Traumatic amputation of two or more lesser toes[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 S98.22 in its code family, with their registry titles.

• S98.212S — Complete traumatic amputation of two or more left lesser toes, sequela
• S98.219 — Complete traumatic amputation of two or more unspecified lesser toes
• S98.219A — Complete traumatic amputation of two or more unspecified lesser toes, initial encounter
• S98.219D — Complete traumatic amputation of two or more unspecified lesser toes, subsequent encounter
• S98.219S — Complete traumatic amputation of two or more unspecified lesser toes, sequela
• S98.221 — Partial traumatic amputation of two or more right lesser toes
• S98.221A — Partial traumatic amputation of two or more right lesser toes, initial encounter
• S98.221D — Partial traumatic amputation of two or more right lesser toes, subsequent encounter
• S98.221S — Partial traumatic amputation of two or more right lesser toes, sequela
• S98.222 — Partial traumatic amputation of two or more left lesser toes

View all codes in the S98 family