2027 ICD-10-CM Diagnosis Code S01Open wound of head

ICD-10-CM Codes›S00–T88›S00-S09›S01

ICD-10-CM S01
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

S01 is a non-billable ICD-10-CM category code for open wound of head, so it cannot be submitted on claims. Use a more specific code from this category instead, such as S01.00XA, S01.00XD, S01.00XS, and S01.01XA.

Code Identity

ICD-10-CM Code
S01
Billable Status
No — Non-Billable Category
Code Describes
Open wound of head
Short Description
Open wound of head
Same as the full description in the CMS dataset.
Chapter
S00-S09
Injuries to the head

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS00-S09Injuries to the head
CategoryS01Open wound of head
This CodeS01Open wound of head

Specific Coding for Open wound of headOverview

Non-specific codes like S01 require more characters. Use one of these billable codes instead:

  • S01.0 for Open wound of scalp

  • S01.00 for Unspecified open wound of scalp

  • S01.01 for Laceration without foreign body of scalp

  • S01.02 for Laceration with foreign body of scalp

  • S01.03 for Puncture wound without foreign body of scalp

  • S01.04 for Puncture wound with foreign body of scalp

  • S01.05 for Open bite of scalp

  • S01.1 for Open wound of eyelid and periocular area

  • S01.10 for Unspecified open wound of eyelid and periocular area

  • S01.11 for Laceration without foreign body of eyelid and periocular area

  • S01.12 for Laceration with foreign body of eyelid and periocular area

  • S01.13 for Puncture wound without foreign body of eyelid and periocular area

  • S01.14 for Puncture wound with foreign body of eyelid and periocular area

  • S01.15 for Open bite of eyelid and periocular area

  • S01.2 for Open wound of nose

  • S01.20 for Unspecified open wound of nose

  • S01.21 for Laceration without foreign body of nose

  • S01.22 for Laceration with foreign body of nose

  • S01.23 for Puncture wound without foreign body of nose

  • S01.24 for Puncture wound with foreign body of nose

  • S01.25 for Open bite of nose

  • S01.3 for Open wound of ear

  • S01.30 for Unspecified open wound of ear

  • S01.31 for Laceration without foreign body of ear

  • S01.32 for Laceration with foreign body of ear

  • S01.33 for Puncture wound without foreign body of ear

  • S01.34 for Puncture wound with foreign body of ear

  • S01.35 for Open bite of ear

  • S01.4 for Open wound of cheek and temporomandibular area

  • S01.40 for Unspecified open wound of cheek and temporomandibular area

  • S01.41 for Laceration without foreign body of cheek and temporomandibular area

  • S01.42 for Laceration with foreign body of cheek and temporomandibular area

  • S01.43 for Puncture wound without foreign body of cheek and temporomandibular area

  • S01.44 for Puncture wound with foreign body of cheek and temporomandibular area

  • S01.45 for Open bite of cheek and temporomandibular area

  • S01.5 for Open wound of lip and oral cavity

  • S01.50 for Unspecified open wound of lip and oral cavity

  • S01.51 for Laceration of lip and oral cavity without foreign body

  • S01.52 for Laceration of lip and oral cavity with foreign body

  • S01.53 for Puncture wound of lip and oral cavity without foreign body

  • S01.54 for Puncture wound of lip and oral cavity with foreign body

  • S01.55 for Open bite of lip and oral cavity

  • S01.8 for Open wound of other parts of head

  • S01.80 for Unspecified open wound of other part of head

  • S01.81 for Laceration without foreign body of other part of head

  • S01.82 for Laceration with foreign body of other part of head

  • S01.83 for Puncture wound without foreign body of other part of head

  • S01.84 for Puncture wound with foreign body of other part of head

  • S01.85 for Open bite of other part of head

  • S01.9 for Open wound of unspecified part of head

  • S01.90 for Unspecified open wound of unspecified part of head

  • S01.91 for Laceration without foreign body of unspecified part of head

  • S01.92 for Laceration with foreign body of unspecified part of head

  • S01.93 for Puncture wound without foreign body of unspecified part of head

  • S01.94 for Puncture wound with foreign body of unspecified part of head

  • S01.95 for Open bite of unspecified part of head

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Open wound of head (S01). Use the following options for the applicable episode of care:

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

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to S01: its own notes plus those printed at block S00-S09 and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block S00-S09 Injuries to the head applies to 1,934 codes
  • injuries of ear
  • injuries of eye
  • injuries of face [any part]
  • injuries of gum
  • injuries of jaw
  • injuries of oral cavity
  • injuries of palate
  • injuries of periocular area
  • injuries of scalp
  • injuries of temporomandibular joint area
  • injuries of tongue
  • injuries of tooth

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • open skull fracture (S02.- with 7th character B)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On S01 itself
  • injury of eye and orbit (S05.-)
  • traumatic amputation of part of head (S08.-)
From Block S00-S09 Injuries to the head applies to 1,934 codes
  • burns and corrosions (T20-T32)
  • effects of foreign body in ear (T16)
  • effects of foreign body in larynx (T17.3)
  • effects of foreign body in mouth NOS (T18.0)
  • effects of foreign body in nose (T17.0-T17.1)
  • effects of foreign body in pharynx (T17.2)
  • effects of foreign body on external eye (T15.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

On S01 itself
  • any associated:
  • injury of cranial nerve (S04.-)
  • injury of muscle and tendon of head (S09.1-)
  • intracranial injury (S06.-)
  • wound infection
From Block S00-S09 Injuries to the head applies to 1,934 codes
  • for any associated infection

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category S01
Values for category S01 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name S01, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming S01: they are not reported together with it, unless the two conditions are unrelated.

  • S00 Superficial injury of head
    open wound of head (S01.-)

Code Also 3

These codes say S01 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • S04 Injury of cranial nerve
    open wound of head (S01.-)
  • S06 Intracranial injury
    open wound of head (S01.-)
  • S09.1 Injury of muscle and tendon of head
    any associated open wound (S01.-)

Patient EducationClinical

Wounds and Injuries

An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S01Overview

What is the ICD-10 code for open wound of head?

S01 is the ICD-10-CM category for open wound of head, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is S01 (Open wound of head) a billable code?

No. This is a category header that groups the codes for open wound of head, and headers cannot be submitted on claims. Claims for open wound of head need a more specific code from this category, such as S01.00XA, S01.00XD, and S01.00XS.

Can S01 be reported with a code from S02?

Not as a rule. The Excludes1 note on S01 lists "open skull fracture (S02.- with 7th character B)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).