October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

See what changed

ICD-10 · PDGM grouping

F40 Phobic anxiety disorders

All 23 codes in the F40 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.

ICD-10-CM FY2027 · CMS grouper v07.2.26

Codes in family

23

Can lead a claim

21

Cannot lead a claim

2

What CMS assigns to F40

21 of the 23 codes group to Behavioral Health; 2 are assigned no clinical group. 3 of the 23 count toward the Phobias, Other Anxiety and Obsessive compulsive disorders comorbidity subgroup; 20 are assigned none. 21 of the 23 can lead a claim.

  • Phobias, Other Anxiety and Obsessive compulsive disorders

Every code in F40

Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
F40.0 Agoraphobia
F40.00Agoraphobia, unspecifiedCan lead a claimFPhobias, Other Anxiety and Obsessive compulsive disorders
F40.01Agoraphobia with panic disorderCan lead a claimFPhobias, Other Anxiety and Obsessive compulsive disorders
F40.02Agoraphobia without panic disorderCan lead a claimFPhobias, Other Anxiety and Obsessive compulsive disorders
F40.1 Social phobias
F40.10Social phobia, unspecifiedCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone
F40.11Social phobia, generalizedCan lead a claimFNone
F40.2 Specific (isolated) phobias
F40.21 Animal type phobia
F40.210ArachnophobiaCan lead a claimFNone
F40.218Other animal type phobiaCan lead a claimFNone
F40.22 Natural environment type phobia
F40.220Fear of thunderstormsCan lead a claimFNone
F40.228Other natural environment type phobiaCan lead a claimFNone
F40.23 Blood, injection, injury type phobia
F40.230Fear of bloodCan lead a claimFNone
F40.231Fear of injections and transfusionsCan lead a claimFNone
F40.232Fear of other medical careCan lead a claimFNone
F40.233Fear of injuryCan lead a claimFNone
F40.24 Situational type phobia
F40.240ClaustrophobiaCan lead a claimFNone
F40.241AcrophobiaCan lead a claimFNone
F40.242Fear of bridgesCan lead a claimFNone
F40.243Fear of flyingCan lead a claimFNone
F40.248Other situational type phobiaCan lead a claimFNone
F40.29 Other specified phobia
F40.290AndrophobiaCan lead a claimFNone
F40.291GynephobiaCan lead a claimFNone
F40.298Other specified phobiaCan lead a claimFNone
F40.8Other phobic anxiety disordersCan lead a claimFNone
F40.9Phobic anxiety disorder, unspecifiedCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone

Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.

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