300 Neurotic disorders (300.00-300.9) ICD-9-CM
The 300.00-300.9 block classified 300 neurotic disorders with 26 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Legacy Codes in the 300.00-300.9 Block 26 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 300.00 Anxiety state NOS
- 300.01 Panic dis w/o agorphobia
- 300.02 Generalized anxiety dis
- 300.09 Anxiety state NEC
- 300.10 Hysteria NOS
- 300.11 Conversion disorder
- 300.12 Dissociative amnesia
- 300.13 Dissociative fugue
- 300.14 Dissociatve identity dis
- 300.15 Dissociative react NOS
- 300.16 Factitious dis w symptom
- 300.19 Factitious ill NEC/NOS
- 300.20 Phobia NOS
- 300.21 Agoraphobia w panic dis
- 300.22 Agoraphobia w/o panic
- 300.23 Social phobia
- 300.29 Isolated/spec phobia NEC
- 300.3 Obsessive-compulsive dis
- 300.4 Dysthymic disorder
- 300.5 Neurasthenia
- 300.6 Depersonalization disord
- 300.7 Hypochondriasis
- 300.81 Somatization disorder
- 300.82 Undiff somatoform disrdr
- 300.89 Somatoform disorders NEC
- 300.9 Nonpsychotic disord NOS
Questions About This Page
Are the 300.00-300.9 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 300.00-300.9 block classify?
The block classified 300 neurotic disorders with 26 codes in the final ICD-9-CM release. It sat under Mental disorders (290–319) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
