ICD-10-CM Code First Notes · Chapter 19 · FY 2027 S00-T88

Code First Notes in Chapter 19: Injury, poisoning and certain other consequences of external causes ICD-10-CM

A Code First note means the underlying condition named in the note is sequenced before this code. In Chapter 19 (S00-T88), notes printed in the chapter name other codes 54 times, and Code First Notes anywhere in the Tabular List name the chapter’s codes 154 times, covering 55 distinct codes, categories and ranges. Switch views to read the list either way.

✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A
54
References in Its Notes
154
References to Its Codes
55
Chapter Codes Named
S00-T88
Chapter 19
Chapter 19

Code First Notes by the code that carries the note

44 of 44 shown
  • S04 Injury of cranial nerve applies to 114 codes
    • any associated intracranial injury (S06.-)
  • S06.A Traumatic brain compression and herniation applies to 6 codes
    • diffuse traumatic brain injury (S06.2-)
    • focal traumatic brain injury (S06.3-)
    • traumatic subdural hemorrhage (S06.5-)
    • traumatic subarachnoid hemorrhage (S06.6-)
  • S12 Fracture of cervical vertebra and other parts of neck applies to 420 codes
    • any associated cervical spinal cord injury (S14.0, S14.1-)
  • S22 Fracture of rib(s), sternum and thoracic spine applies to 354 codes
  • S32 Fracture of lumbar spine and pelvis applies to 846 codes
    • any associated spinal cord and spinal nerve injury (S34.-)
  • T20.4 Corrosion of unspecified degree of head, face, and neck applies to 33 codes
    • (T51-T65) to identify chemical and intent
  • T20.5 Corrosion of first degree of head, face, and neck applies to 33 codes
    • (T51-T65) to identify chemical and intent
  • T20.6 Corrosion of second degree of head, face, and neck applies to 33 codes
    • (T51-T65) to identify chemical and intent
  • T20.7 Corrosion of third degree of head, face, and neck applies to 33 codes
    • (T51-T65) to identify chemical and intent
  • T21.4 Corrosion of unspecified degree of trunk applies to 27 codes
    • (T51-T65) to identify chemical and intent
  • T21.5 Corrosion of first degree of trunk applies to 27 codes
    • (T51-T65) to identify chemical and intent
  • T21.6 Corrosion of second degree of trunk applies to 27 codes
    • (T51-T65) to identify chemical and intent
  • T21.7 Corrosion of third degree of trunk applies to 27 codes
    • (T51-T65) to identify chemical and intent
  • T22.4 Corrosion of unspecified degree of shoulder and upper limb, except wrist and hand applies to 66 codes
    • (T51-T65) to identify chemical and intent
  • T22.5 Corrosion of first degree of shoulder and upper limb, except wrist and hand applies to 66 codes
    • (T51-T65) to identify chemical and intent
  • T22.6 Corrosion of second degree of shoulder and upper limb, except wrist and hand applies to 66 codes
    • (T51-T65) to identify chemical and intent
  • T22.7 Corrosion of third degree of shoulder and upper limb, except wrist and hand applies to 66 codes
    • (T51-T65) to identify chemical and intent
  • T23.4 Corrosion of unspecified degree of wrist and hand applies to 81 codes
    • (T51-T65) to identify chemical and intent
  • T23.5 Corrosion of first degree of wrist and hand applies to 81 codes
    • (T51-T65) to identify chemical and intent
  • T23.6 Corrosion of second degree of wrist and hand applies to 81 codes
    • (T51-T65) to identify chemical and intent
  • T23.7 Corrosion of third degree of wrist and hand applies to 81 codes
    • (T51-T65) to identify chemical and intent
  • T24.4 Corrosion of unspecified degree of lower limb, except ankle and foot applies to 45 codes
    • (T51-T65) to identify chemical and intent
  • T24.5 Corrosion of first degree of lower limb, except ankle and foot applies to 45 codes
    • (T51-T65) to identify chemical and intent
  • T24.6 Corrosion of second degree of lower limb, except ankle and foot applies to 45 codes
    • (T51-T65) to identify chemical and intent
  • T24.7 Corrosion of third degree of lower limb, except ankle and foot applies to 45 codes
    • (T51-T65) to identify chemical and intent
  • T25.4 Corrosion of unspecified degree of ankle and foot applies to 36 codes
    • (T51-T65) to identify chemical and intent
  • T25.5 Corrosion of first degree of ankle and foot applies to 36 codes
    • (T51-T65) to identify chemical and intent
  • T25.6 Corrosion of second degree of ankle and foot applies to 36 codes
    • (T51-T65) to identify chemical and intent
  • T25.7 Corrosion of third degree of ankle and foot applies to 36 codes
    • (T51-T65) to identify chemical and intent
  • T26.5 Corrosion of eyelid and periocular area applies to 9 codes
    • (T51-T65) to identify chemical and intent
  • T26.6 Corrosion of cornea and conjunctival sac applies to 9 codes
    • (T51-T65) to identify chemical and intent
  • T26.7 Corrosion with resulting rupture and destruction of eyeball applies to 9 codes
    • (T51-T65) to identify chemical and intent
  • T26.8 Corrosions of other specified parts of eye and adnexa applies to 9 codes
    • (T51-T65) to identify chemical and intent
  • T26.9 Corrosion of eye and adnexa, part unspecified applies to 9 codes
    • (T51-T65) to identify chemical and intent
  • T27.4 Corrosion of larynx and trachea applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T27.5 Corrosion involving larynx and trachea with lung applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T27.6 Corrosion of other parts of respiratory tract applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T27.7 Corrosion of respiratory tract, part unspecified applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T28.5 Corrosion of mouth and pharynx applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T28.6 Corrosion of esophagus applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T28.7 Corrosion of other parts of alimentary tract applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T28.8 Corrosion of internal genitourinary organs applies to 3 codes
    • (T51-T65) to identify chemical and intent
  • T28.9 Corrosions of other and unspecified internal organs applies to 15 codes
    • (T51-T65) to identify chemical and intent
  • Block note Block T36-T50 Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances applies to 3,186 codes

The first view lists notes printed in this chapter (a note on a category or block applies to every code beneath it). The second lists codes of this chapter named by Code First Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Code First Notes

What does a Code First note mean?

A Code First note means the underlying condition named in the note is sequenced before the code that carries the note. Under the etiology/manifestation convention, a “code first” note appears at the manifestation code and a “use additional code” note at the etiology code (Section I.A.13). The FY 2027 Tabular List has 810 of them; 600 name other codes, with 736 references to 429 distinct codes, categories and ranges.

Can a code with a Code First note be the principal diagnosis?

Not when it is a manifestation code. Codes titled “in diseases classified elsewhere” are never permitted as the first-listed or principal diagnosis; they must follow the underlying condition. The etiology and manifestation page lists them all.

Related References

ICD-10-CM Official GuidelinesICD-10-CM Code LookupICD-10-CM Codes ListCode Lists by Tag

Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.