ICD-10-CM Use Additional Code Notes · Chapter 5 · FY 2027 F01-F99

Use Additional Code Notes in Chapter 5: Mental and behavioural disorders ICD-10-CM

A Use Additional Code note means a second code should be added, after this one, to fully describe the condition. In Chapter 5 (F01-F99), notes printed in the chapter name other codes 16 times, and Use Additional Code Notes anywhere in the Tabular List name the chapter’s codes 213 times, covering 31 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
16
References in Its Notes
213
References to Its Codes
31
Chapter Codes Named
F01-F99
Chapter 5
Chapter 5

Use Additional Code Notes by the code that carries the note

16 of 16 shown
  • F01.518 Vascular dementia, unspecified severity, with other behavioral disturbance
    • code, if applicable, to identify wandering in vascular dementia (Z91.83)
  • F01.A18 Vascular dementia, mild, with other behavioral disturbance
    • code, if applicable, to identify wandering in vascular dementia (Z91.83)
  • F01.B18 Vascular dementia, moderate, with other behavioral disturbance
    • code, if applicable, to identify wandering in vascular dementia (Z91.83)
  • F01.C18 Vascular dementia, severe, with other behavioral disturbance
    • code, if applicable, to identify wandering in vascular dementia (Z91.83)
  • F02.818 Dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance
    • code, if applicable, to identify wandering in dementia in conditions classified elsewhere (Z91.83)
  • F02.A18 Dementia in other diseases classified elsewhere, mild, with other behavioral disturbance
    • code, if applicable, to identify wandering in dementia in conditions classified elsewhere (Z91.83)
  • F02.B18 Dementia in other diseases classified elsewhere, moderate, with other behavioral disturbance
    • code, if applicable, to identify wandering in dementia in conditions classified elsewhere (Z91.83)
  • F02.C18 Dementia in other diseases classified elsewhere, severe, with other behavioral disturbance
    • code, if applicable, to identify wandering in dementia in conditions classified elsewhere (Z91.83)
  • F03.918 Unspecified dementia, unspecified severity, with other behavioral disturbance
    • code, if applicable, to identify wandering in unspecified dementia (Z91.83)
  • F03.A18 Unspecified dementia, mild, with other behavioral disturbance
    • code, if applicable, to identify wandering in unspecified dementia (Z91.83)
  • F03.B18 Unspecified dementia, moderate, with other behavioral disturbance
    • code, if applicable, to identify wandering in unspecified dementia (Z91.83)
  • F03.C18 Unspecified dementia, severe, with other behavioral disturbance
    • code, if applicable, to identify wandering in unspecified dementia (Z91.83)
  • F07.81 Postconcussional syndrome
    • code to identify associated post-traumatic headache, if applicable (G44.3-)
  • F10 Alcohol related disorders applies to 58 codes
    • code for blood alcohol level, if applicable (Y90.-)
  • F20 Schizophrenia applies to 8 codes
    • other specified cognitive deficit (R41.84-)
  • F64.1 Dual role transvestism
    • code to identify sex reassignment status (Z87.890-)

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 Use Additional Code Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Use Additional Code Notes

What does a Use Additional Code note mean?

A Use Additional Code note tells you to add a second code, reported after the code that carries the note, to describe the condition completely. In an etiology/manifestation pair it sits at the etiology code and points to the manifestation (Section I.A.13). The FY 2027 Tabular List has 1,491 of them; 1,174 name other codes, with 1,438 references to 389 distinct codes, categories and ranges.

Where does the additional code go?

After the code carrying the note. For etiology/manifestation pairs the Guidelines are explicit: the etiology is sequenced first, followed by the manifestation code.

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.