2027 ICD-10-CM Diagnosis Code E34.9Endocrine disorder, unspecified
ICD-10-CM Codes›E00–E89›E20-E35›E34
- Billable — Valid for Submission
- Not Chronic
E34.9 is a billable ICD-10-CM diagnosis code for endocrine disorder, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 643 through 645. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified endocrine disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abnormal hormonal requirement
- Abnormal hormone production
- Abnormal hormone secretion
- Acute confusional state, of endocrine origin
- Adult osteomalacia due to endocrine disease
- Alopecia, progressive neurological defect, endocrinopathy syndrome
- Anemia of endocrine disorder
- Arthropathy associated with an endocrine AND/OR metabolic disorder
- Arthropathy due to endocrine disorder
- Autonomic neuropathy due to endocrine disease
- Benign intracranial hypertension
- Benign intracranial hypertension due to endocrine disease
- Chorea due to endocrine disorder
- Combination of endocrine dysfunction
- Decreased hormonal activity
- Decreased hormone production
- Decreased hormone secretion
- Disorder of endocrine receptor
- Disorder of endocrine system
- Endocrine disease treatment started
- Endocrine disorder monitoring status
- Endocrine disorder related to puberty
- Endocrine female infertility
- Endocrine menstrual disturbance
- Endocrine myopathy
- Endocrine symptom change
- Endocrine system complication of procedure
- Epiphyseal arrest due to disorder of endocrine system
- Erectile dysfunction due to endocrine disease
- Erythrocytosis due to endocrine disorder
- Functional disease of the CNS with neuroendocrine disturbance
- Glaucoma in endocrine, nutritional and metabolic diseases
- Hereditary disorder of endocrine system
- Hormonal activity
- Hormonal requirement
- Hormonal resistance
- Hypermelanosis due to endocrine disorder
- Hypermelanosis due to hormonal factor
- Hypertension secondary to endocrine disorder
- Impaired glucose tolerance associated with hormonal etiology
- Inappropriate hormone secretion
- Inappropriate secondary erythrocytosis
- Increased hormonal activity
- Increased hormone production
- Increased hormone secretion
- Infantile multisystem neurologic, endocrine, pancreatic disease
- Intellectual disability, myopathy, short stature, endocrine defect syndrome
- Isolated deficiency of hormone other than HGH
- Lymphedema due to endocrine disease
- Multiple endocrine deficiency syndrome
- Neuropathy associated with endocrine disorder
- Obesity due to leptin receptor gene deficiency
- Optic nerve hypoplasia due to endocrine deficiency
- Osteoporosis due to endocrine disorder
- Pancreatic insufficiency
- POEMS syndrome
- Polyendocrine polyneuropathy syndrome
- Psychogenic endocrine malfunction
- Sequelae of endocrine disorders
- Severe obesity
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to E34.9: its own notes plus those printed at E34, block E20-E35, and Chapter 4. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Endocrine disturbance NOS
- Hormone disturbance NOS
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Notes
General instructions on how these codes are used.
- 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: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name E34.9, its category, or a range that includes it.
Code First 1
These codes say to code first a condition named in the note, and E34.9 is one of the conditions named.
- G63 Polyneuropathy in diseases classified elsewhere
Notes 1
These notes mention E34.9.
- Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseasesAll 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. names E34.-, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
endocrine disorder NEC See Also: subcategory M14.8-; E34.9
Arthropathy See Also: Arthritis; M12.9
Disease, diseased See Also: Syndrome;
ductless glands E34.9
Disorder (of) See Also: Disease;
endocrine E34.9
Disturbance (s) See Also: Disease;
endocrine (gland) E34.9
hormones E34.9
Dysendocrinism E34.9
endocrine NOS E34.9
gland, glandular NOS E34.9
endocrine NEC E34.9
endocrine disease NEC E34.9
peripheral (nerve) See Also: Polyneuropathy; G62.9
Syndrome See Also: Disease;
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Endocrine Disorder
a non-neoplastic or neoplastic disorder that affects the endocrine glands.
Patient EducationClinical
Endocrine Diseases
Your endocrine system includes eight major glands throughout your body. These glands make hormones. Hormones are chemical messengers. They travel through your bloodstream to tissues or organs. Hormones work slowly and affect body processes from head to toe. These include:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert E34.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About E34.9Overview
What is the ICD-10 code for endocrine disorder, unspecified?
The ICD-10-CM code for endocrine disorder, unspecified is E34.9 (sometimes written as E349). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is E34.9 (Other endocrine disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report endocrine disorder, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does E34.9 group to?
When endocrine disorder, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 644, 645, 643, with relative weights from 0.7461 to 1.6138 depending on complications. Higher weights mean higher Medicare reimbursement.
Can E34.9 be reported with E20.1?
Not as a rule. The Excludes1 note at E34, which applies to E34.9, lists "pseudohypoparathyroidism (E20.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of E34.9?
Under the General Equivalence Mappings, endocrine disorder, unspecified converts to ICD-9-CM 259.9 (endocrine disorder NOS). The mapping is approximate, so confirm the match fits the documentation.
