E10.40 ICD-10-CA code: Type 1 diabetes mellitus with mononeuropathy
E10.40 is the ICD-10-CA code for “Type 1 diabetes mellitus with mononeuropathy” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
E10.40Type 1 diabetes mellitus with mononeuropathy
Short description: Type 1 DM with mononeuropathy
ICD-10-CA · Canada · Also written E1040
Notes for E10.40
As CIHI prints them, with any note E10.40 takes from the headings above it.
Includes
- Type 1 diabetes mellitus with:• amyotrophy (G73.0*)• carpal tunnel syndrome (G59.0*)• cranial nerve palsy - III (oculomotor), VI (abducens) (G59.0*)• femoral neuropathy (G59.0*)• mononeuritis multiplex (G59.0*)• mononeuropathy (G59.0*)• myasthenia gravis (G73.0*)• myasthenic syndromes (G73.0*)• ophthalmoplegia (G59.0*)• radiculopathy - thoracic, truncal (G59.0*)• ulnar nerve compression or entrapment (G59.0*)
- Diabetes (mellitus):• autoimmune• brittle• idiopathic• insulin dependent• juvenile onsetFrom E10 Type 1 diabetes mellitus
Use additional code
Add a code for this detail when the note documents it.
- Use additional code to identify any:• type 1 diabetes mellitus with poor control, so described (E10.64)From E10.4 Type 1 diabetes mellitus with neurological complications
Excludes
Conditions classified elsewhere.
- Type 1 diabetes mellitus with autonomic (mono)neuropathy (E10.42)
- Diabetes mellitus (in):• NOS (E14.-)• neonatal (P70.2)• other specified (E13.-)• pregnancy (gestational), childbirth and the puerperium (O24.-)• renal glycosuria (E74.8)• type 2 (E11.-)due to genetic defect (in) (of) beta-cell function, insulin action (E13.-)impaired carbohydrate tolerance (pre-diabetes) (R73.0)maturity onset diabetes of the young [MODY] (E13.-)non-insulin dependent diabetes mellitus of the young [NIDDMY] (E11.-)post-procedural hypoinsulinaemia of the non-diabetic (E89.1)From E10 Type 1 diabetes mellitus
- Metabolic syndrome (dysmetabolic syndrome) (syndrome X) (insulin resistance syndrome) (E88.80)From E10-E14 Diabetes mellitus
- Complications of pregnancy, childbirth and the puerperium (O00-O99)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)transitory endocrine and metabolic disorders specific to fetus and newborn (P70-P74)From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Note
- All neoplasms, whether functionally active or not, are classified in Chapter II. Appropriate codes in this chapter (i.e. E05.8)(E07.0) (E16-E31)(E34.-) may be used, if desired, 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.From Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
Where E10.40 sits
- 1ChapterChapter 4: Endocrine, nutritional and metabolic diseases (E00-E90)
- 2Block E10-E14Diabetes mellitus
- 3Category E10Type 1 diabetes mellitus
- 4Subcategory E10.4Type 1 diabetes mellitus with neurological complications
- 5Valid code E10.40Type 1 diabetes mellitus with mononeuropathy
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code E10.40 mean?
E10.40 is the ICD-10-CA code for “Type 1 diabetes mellitus with mononeuropathy” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is E10.40 in ICD-10-CA?
E10.40 sits under E10.4 Type 1 diabetes mellitus with neurological complications, within E10 Type 1 diabetes mellitus, within E10-E14 Diabetes mellitus, within Chapter 4: Endocrine, nutritional and metabolic diseases (E00-E90).
What coding notes apply to E10.40?
ICD-10-CA lists Includes, Excludes, Use additional code, Note notes for E10.40, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.