Codes Summary
74,719
Total codes in ICD-10-CM 2026
487
New codes added
28
Codes deleted
38
Code titles revised
Although fewer in number than previous years, the FY 2026 ICD-10-CM code updates bring significant new classifications.
Code Descriptor Revisions
The FY 2026 ICD-10-CM code updates include 38 code descriptor revisions. Key examples include:
- L02212: Changed from "Cutaneous abscess of back [any part, except buttock]" to "Cutaneous abscess of back [any part, except buttock and flank]"
- M21159: Changed from "Varus deformity, not elsewhere classified, unspecified" to "Varus deformity, not elsewhere classified, unspecified hip"
- P096: Changed from "Abnormal findings on neonatal screening for neonatal hearing loss" to "Abnormal findings on neonatal hearing screening"
- Q75001-Q75029: Craniosynostosis codes revised for better specificity
- S62-series: Multiple fracture codes revised from "wrist and hand" to just "hand"
- S7421X series: Corrected from "hip and high level" to "hip and thigh level"
Code Deletions
The FY 2026 ICD-10-CM code updates include 28 code deletions. Notable deletions include:
- B880: Other acariasis
- D71: Functional disorders of polymorphonuclear neutrophils
- E7253: Primary hyperoxaluria
- E7801: Familial hypercholesterolemia
- E881: Lipodystrophy, not elsewhere classified
- G35: Multiple sclerosis
- T7807X series: Anaphylactic reaction due to milk and dairy products
- T7808X series: Anaphylactic reaction due to eggs
- Z91011: Allergy to milk products
- Z91012: Allergy to eggs
Important: Code deletions typically indicate that conditions have been reclassified to more specific codes. Review the new code assignments before the effective date.
Chapter-by-Chapter Breakdown
Key chapters with significant updates:
Chapter 12
Diseases of the Skin (L00-L99)
116 new codes - The largest addition, with 2 revisions and no deletions.
Chapter 19
Injury & Poisoning (S00-T88)
213 new codes, 24 revisions, 12 deletions - Major updates to injury classifications.
Chapter 17
Congenital Malformations (Q00-Q99)
23 new codes, 6 revisions, 2 deletions - Including craniosynostosis updates.
Chapter 4
Endocrine & Metabolic (E00-E89)
23 new codes, 3 deletions - Updates to metabolic conditions.
Additional Chapter Updates
- Chapter 18 (Symptoms, R00-R99): 21 new codes, 2 deletions
- Chapter 21 (Factors influencing health, Z00-Z99): 26 new codes, 5 deletions
- Chapter 20 (External causes, V00-Y99): 20 new codes, 1 revision
- Chapter 7 (Eye diseases, H00-H59): 17 new codes, 1 deletion
- Chapter 6 (Nervous system, G00-G99): 10 new codes, 1 deletion