Answer: The latest ICD-10-CM code set is the 2027 ICD-10-CM files, with new codes effective October 1, 2026.
Status: Confirmed
Entry: health/icd-10-cm
Revision: 1
Digest: sha256:6675f1a0685f069a (changes whenever the content changes)

Timeline:
  Created: 2026-11-12T10:44:37Z
  Last changed: 2026-11-12T10:44:37Z
  Last verified: 2026-11-12T11:34:16Z
  Next check: 2026-11-13T11:34:16Z
  Check interval: Daily
  Expected change: No fixed schedule

Data:
  Field | Value | Source | As of
  Latest ICD-10-CM code set | 2027 ICD-10-CM | [1] | 2026-11-12
  Effective date | October 1, 2026 | [1] | 2026-11-12
  Discharge period | October 1, 2026 – September 30, 2027 | [1] | 2026-11-12
  Fiscal year | FY 2027 | [1] | 2026-11-12

Sources:
  [1] Centers for Medicare & Medicaid Services. "www.cms.gov/medicare/coding-billing/icd-10-codes". https://www.cms.gov/medicare/coding-billing/icd-10-codes
      Role: primary. Accessed: 2026-11-12T11:34:16Z
      Quote: "2027 ICD-10 CM & PCS files 2027 ICD-10-CM files" (Supports: Latest ICD-10-CM code set)
      Quote: "CDC announces new ICD-10-CM codes effective October 1, 2026." (Supports: Effective date)
      Quote: "Use these files for discharges occurring from October 1, 2026 – September 30, 2027" (Supports: Discharge period)
      Quote: "These files include updates for FY 2027." (Supports: Fiscal year)
      Published: 2026-11-12T09:20:09Z
      Snapshot SHA-256: efe7a7f41bfd0ad4b34d0e2a94f59a2edccc53cfa4acbc690a710009a7c2a5f0 (captured 2026-11-12T10:44:37Z)

Verification:
  Method: Automated extraction from [1] with deepseek-flash (JSON output, thinking disabled). Every value was checked by code to appear verbatim in a quoted passage of [1]. On this check the text of [1] was unchanged since 2026-11-12T10:44:37Z, so the values verified then were kept.
  Cross-check: not-available at 2026-11-12T11:34:16Z. No independent second source is configured for this entry
  Last successful check: 2026-11-12T11:34:16Z
  Last attempt: 2026-11-12T11:34:16Z

Notes and limitations:
  Extracted automatically from a single official source.

Change log:
  Time | Event | Change | Source
  2026-11-12T10:44:37Z | added | Entry created | —
  Changes for this entry as a feed: https://latestn.com/health/icd-10-cm/latest

Challenge this entry:
  Open challenges: None
  How: If a value here is wrong or out of date, send what is wrong and a link to evidence. Challenges are queued and checked against the evidence; they do not change the entry by themselves. If the entry changes as a result, the change log says so.
  Form: https://latestn.com/dispute/health/icd-10-cm
  POST: https://latestn.com/dispute/health/icd-10-cm with claim, evidence_url, and optionally field and contact (form-encoded or JSON)
  GET: https://latestn.com/dispute/health/icd-10-cm?claim={what is wrong}&evidence_url={link}

How to cite:
    latestN. (2026). What is the latest ICD-10-CM code set? Revision 1, last verified 2026-11-12T11:34:16Z. https://latestn.com/health/icd-10-cm (accessed 2026-11-12T12:52:57Z).

    @misc{latestN_health_icd_10_cm_r1,
      title        = {What is the latest ICD-10-CM code set?},
      author       = {{latestN}},
      year         = {2026},
      howpublished = {\url{https://latestn.com/health/icd-10-cm}},
      note         = {Revision 1; digest sha256:6675f1a0685f069a; last verified 2026-11-12T11:34:16Z; accessed 2026-11-12T12:52:57Z}
    }

URL: https://latestn.com/health/icd-10-cm