ICD-10-CM Code First Notes · Chapter 16 · FY 2027 P00-P96

Code First Notes in Chapter 16: Certain conditions originating in the perinatal period ICD-10-CM

A Code First note means the underlying condition named in the note is sequenced before this code. In Chapter 16 (P00-P96), notes printed in the chapter name other codes 6 times, and Code First Notes anywhere in the Tabular List name the chapter’s codes 9 times, covering 7 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
6
References in Its Notes
9
References to Its Codes
7
Chapter Codes Named
P00-P96
Chapter 16
Chapter 16

Code First Notes by the code that carries the note

3 of 3 shown
  • P04.1 Newborn affected by other maternal medication applies to 10 codes
    • , if applicable, withdrawal symptoms from maternal use of drugs of addiction (P96.1)
    • withdrawal symptoms from therapeutic use of drugs in newborn (P96.2)
  • P58.4 Neonatal jaundice due to drugs or toxins transmitted from mother or given to newborn applies to 2 codes
    • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)
  • P91.811 Neonatal encephalopathy in diseases classified elsewhere
    • congenital cirrhosis (of liver) (P78.81)
    • intracranial nontraumatic hemorrhage of newborn (P52.-)
    • kernicterus (P57.-)

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.