Coding and coverage · ICD-10-CM
Instructional notes
Chapter 17
Excludes2Not included here: the patient may have both; report both when both are present.
Notes
- Codes from this chapter are not for use on maternal records
This code
Inclusion terms
- Congenital onychauxis
- Pachyonychia
Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1) · Q80-Q89 Other congenital malformations (Q80-Q89)
Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.
Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.