E35 — Disorders of endocrine glands in diseases classified elsewhere
Is E35 billable?
Yes — E35 is billable for FY2027. E35 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. E35 may be submitted for encounters from October 1, 2026 through September 30, 2027.
E35 at a glance
| Code | E35 |
|---|---|
| Description | Disorders of endocrine glands in diseases classified elsewhere |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to E35?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name E35 directly.
This code describes a manifestation of an underlying disease. The underlying condition must be sequenced before it, so it can never be the principal or first-listed diagnosis.
Which MS-DRGs does E35 group to?
E35 sits in MDC Pre and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCCsurgical
- 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CCsurgical
- 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCCsurgical
How is E35 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to E35. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Dubois' disease (thymus gland)
- Disease, diseased › Dubois
- Calcification › adrenal › tuberculous
- Echinococcus › thyroid NEC › multilocularis (infection)
Excludes1 — never code together
The conditions below can never be reported together with E35 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Echinococcus granulosus infection of thyroid gland (B67.3)
- meningococcal hemorrhagic adrenalitis (A39.1)
- syphilis of endocrine gland (A52.79)
- tuberculosis of adrenal gland, except calcification (A18.7)
- tuberculosis of endocrine gland NEC (A18.82)
- tuberculosis of thyroid gland (A18.81)
- Waterhouse-Friderichsen syndrome (A39.1)
Code first
The underlying condition below must be sequenced before E35. E35 describes a manifestation and cannot be the principal or first-listed diagnosis.
- underlying disease, such as:
- late congenital syphilis of thymus gland [Dubois disease] (A50.59)
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E35 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Excludes1 — never code together — inherited from E20-E35
The conditions below can never be reported together with E35 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has E35 existed?
E35 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with E35?
ICD-10-CM declares these codes mutually exclusive with E35 — exactly one of each pair can be correct for a given encounter.