S01.94 ICD-10-CM Code: Puncture wound with foreign body of unspecified part of head

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for S01.94 in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on S01.94 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 S01"

• 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

S01.94XA, S01.94XD, S01.94XS

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.

Indexed Clinical Terms (1)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• Puncture, head, with foreign body

Do Not Confuse With

Codes named in S01.94's own official notes, or sharing its encounter family, with what separates them. Each links to the full comparison.

• S02— Excludes1 conflict (Conflict)

  Not coded here — these two are mutually exclusive.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  Full comparison: S01.94 vs S02 →

• S01.94XA— 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: S01.94 vs S01.94XA →

• S01.94XD— 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: S01.94 vs S01.94XD →

• S05— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

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

  Full comparison: S01.94 vs S05 →

• S08— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

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

  Full comparison: S01.94 vs S08 →

• T20— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

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

  Full comparison: S01.94 vs T20 →

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. 6 Code Also notes — a second code may apply; the guidelines leave its sequencing to the circumstances of the encounter. See the Code Also notes
3. 1 Excludes1 entry — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
4. 11 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: S01.94XA, S01.94XD, S01.94XS.
• Requires a 7th character. "The appropriate 7th character is to be added to each code from category S01" Options: S01.94XA, S01.94XD, S01.94XS

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 S01.94 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 1 Excludes1 note: S00 — Superficial injury of head (via S01.-).

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

Referenced by 6 Code Also instructions across 2 chapters: G96.00 — Cerebrospinal fluid leak, unspecified (via S01.-), G96.08 — Other cranial cerebrospinal fluid leak (via S01.-), G96.09 — Other spinal cerebrospinal fluid leak (via S01.-), S04 — Injury of cranial nerve (via S01.-), S06 — Intracranial injury (via S01.-), S09.1 — Injury of muscle and tendon of head (via S01.-).

These codes suggest coding this condition alongside when both are present.

Contextual Map

Every relationship of S01.94 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 S01.94 with these 7 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

• S00 — Superficial injury of head[Excludes1](via S01.-): “open wound of head (S01.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code Also instructions

• G96.00 — Cerebrospinal fluid leak, unspecified[Code Also](via S01.-): “head injury (S00-S09)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• G96.08 — Other cranial cerebrospinal fluid leak[Code Also](via S01.-): “head injury (S00 - S09)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• G96.09 — Other spinal cerebrospinal fluid leak[Code Also](via S01.-): “head injury (S00 - S09)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S04 — Injury of cranial nerve[Code Also](via S01.-): “open wound of head (S01.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S06 — Intracranial injury[Code Also](via S01.-): “open wound of head (S01.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S09.1 — Injury of muscle and tendon of head[Code Also](via S01.-): “any associated open wound (S01.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Index entries

• Puncture, head, with foreign body[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (40)

• S01 — Open wound of head[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S01.82 — Laceration with foreign body of other part of head[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S01.82XA — Laceration with foreign body of other part of head, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S01.82XD — Laceration with foreign body of other part of head, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S01.82XS — Laceration with foreign body of other part of head, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S01.83 — Puncture wound without foreign body of other part of head[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S01.83XA — Puncture wound without foreign body of other part of head, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S01.83XD — Puncture wound without foreign body of other part of head, subsequent encounter[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 S01.94 in its code family, with their registry titles.

• S01.92XS — Laceration with foreign body of unspecified part of head, sequela
• S01.93 — Puncture wound without foreign body of unspecified part of head
• S01.93XA — Puncture wound without foreign body of unspecified part of head, initial encounter
• S01.93XD — Puncture wound without foreign body of unspecified part of head, subsequent encounter
• S01.93XS — Puncture wound without foreign body of unspecified part of head, sequela
• S01.94XA — Puncture wound with foreign body of unspecified part of head, initial encounter
• S01.94XD — Puncture wound with foreign body of unspecified part of head, subsequent encounter
• S01.94XS — Puncture wound with foreign body of unspecified part of head, sequela
• S01.95 — Open bite of unspecified part of head
• S01.95XA — Open bite of unspecified part of head, initial encounter

View all codes in the S01 family