New for FY2027 ICD-10-CM · October 1, 2026
E89.838: Other postprocedural hypoglycemia
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Other postprocedural hypoglycemia. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Billable code. Verified against the official FY2027 order file.
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
Source: E00-E89 (chapter, inherited).
Excludes1
transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Source: E00-E89 (chapter, inherited).
Excludes2
intraoperative complications of endocrine system organ or structure (E36.0-, E36.1-, E36.8)
Source: E89 (category, inherited).
Instructional note
code, if known, for hypoglycemia level (E16.A-)
Source: E89.83 (self, inherited).
Instructional note
Post Nissen fundoplication hypoglycemia
Source: E89.838 (self, direct).
Compare the FY2027 additions, removals and billable-status changes
What does E89.838 mean in FY2027?
The official ICD-10-CM descriptor is Other postprocedural hypoglycemia. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
When did E89.838 become an ICD-10-CM code?
E89.838 is new for FY2027 ICD-10-CM, effective October 1, 2026. It is absent from the FY2026 April order file. Use the code set that applies to the encounter or inpatient discharge date, and check the official Tabular instructions.
Is E89.838 billable in FY2027?
The FY2027 order file marks E89.838 as billable. Check the complete Tabular instructions and documentation before assigning it.
Does E89.838 map to an HCC?
E89.838 is not in the current CMS mapping file (it is new for FY2027), and CMS has not yet published payment year 2028 mappings. No HCC category or RAF coefficient is shown.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.