Index to Diseases entry: Insomnia(organic)
Each row is a subterm under the entry. Indented rows refine the row above; “see” sends you to another entry. Look the code up in the tabular list before reporting it: the tabular notes can require a more specific or an additional code.
| Documentation | Code | Code description or cross-reference |
|---|---|---|
| adjustment | F51.02 | Adjustment insomnia |
| adjustment disorder | F51.02 | Adjustment insomnia |
| behavioral, of childhood | Z73.819 | Behavioral insomnia of childhood, unspecified type |
| combined type | Z73.812 | Behavioral insomnia of childhood, combined type |
| limit setting type | Z73.811 | Behavioral insomnia of childhood, limit setting type |
| sleep-onset association type | Z73.810 | Behavioral insomnia of childhood, sleep-onset association type |
| childhood | Z73.819 | Behavioral insomnia of childhood, unspecified type |
| chronic | F51.04 | Psychophysiologic insomnia |
| somatized tension | F51.04 | Psychophysiologic insomnia |
| conditioned | F51.04 | Psychophysiologic insomnia |
| due to | — | |
| alcohol | — | |
| amphetamines | — | |
| anxiety disorder | F51.05 | Insomnia due to other mental disorder |
| caffeine | — | |
| cocaine | — | |
| depression | F51.05 | Insomnia due to other mental disorder |
| drug NEC | — | |
| medical condition | G47.01 | Insomnia due to medical condition |
| mental disorder NEC | F51.05 | Insomnia due to other mental disorder |
| opioid | — | |
| psychoactive substance NEC | — | |
| sedative, hypnotic, or anxiolytic | — | |
| stimulant NEC | — | |
| fatal familial(FFI) | A81.83 | Fatal familial insomnia |
| idiopathic | F51.01 | Primary insomnia |
| learned | F51.3 | Sleepwalking [somnambulism] |
| nonorganic origin | F51.01 | Primary insomnia |
| not due to a substance or known physiological condition | F51.01 | Primary insomnia |
| specified NEC | F51.09 | Other insomnia not due to a substance or known physiological condition |
| paradoxical | F51.03 | Paradoxical insomnia |
| primary | F51.01 | Primary insomnia |
| psychiatric | F51.05 | Insomnia due to other mental disorder |
| psychophysiologic | F51.04 | Psychophysiologic insomnia |
| related to psychopathology | F51.05 | Insomnia due to other mental disorder |
| short-term | F51.02 | Adjustment insomnia |
| specified NEC | G47.09 | Other insomnia |
| stress-related | F51.02 | Adjustment insomnia |
| transient | F51.02 | Adjustment insomnia |
| without objective findings | F51.02 | Adjustment insomnia |
Tabular list notes for G47.00
- Inclusion terms
- Insomnia NOS
How to read an Index to Diseases entry
- Words in parentheses after a term are nonessential modifiers: they may or may not appear in the record, and they do not change the code.
- Indented subterms are essential modifiers. Each one describes a different site, type or cause, and when the record supports it, the subterm's code replaces the default code.
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Frequently asked questions
What is the ICD-10 code for insomnia?
G47.00 (Insomnia, unspecified) is the code the index assigns to "Insomnia(organic)" with no further detail. Confirm it in the tabular list before reporting it, because the tabular notes can require a different or additional code.
Which documentation changes the code for insomnia?
The index lists 30 subterms with their own codes, including adjustment (F51.02); adjustment disorder (F51.02); behavioral, of childhood (Z73.819); behavioral, of childhood combined type (Z73.812); behavioral, of childhood limit setting type (Z73.811).
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.
- ICD-10-CM FY2027 tabular order file (category titles)Version FY2027 · effective 2026-10-01 · file icd10cm_order_2027.txtSHA-256 38981fb2c1226e2b…
- ICD-10-CM FY2027 tabular list (chapter titles and ranges)Version FY2027 · effective 2026-10-01 · file 2027-code-tables-tabular-index.zipSHA-256 37baa476323714be…
- ICD-10-CM FY2027 code descriptions addenda (codes added, deleted and revised)Version FY2027 · effective 2026-10-01 · file icd10cm_codes_addenda_2027.txtSHA-256 cfba025073235af4…
Disclaimer
The entry, subterms and codes are reproduced from the FY2027 ICD-10-CM index; code descriptions are from the FY2027 code files. Code from the medical record using both the index and the tabular list, under the ICD-10-CM Official Guidelines. Not legal, clinical or billing advice.
Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.