G31.87UpcomingBillable / specific

Primary progressive apraxia of speech

G31 · Inherited instructions

Use additional code

code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
mild neurocognitive disorder due to known physiological condition (F06.7-)

Excludes 2 · 9

G31 · Other degenerative diseases of nervous system, not elsewhere classified

Excludes 2

Reye's syndrome (G93.7)

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Claims & coverage

Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

Check Medicare coverage ↗

First observed · 2025-10-01

Code history

Latest recorded change · FY2026

ChangedUnchanged

FY2026

Effective from 2025-10-01

Added

Primary progressive apraxia of speech

Billable diagnosis code

CDC/NCHS · FY2026

All editions (3)

All editions	Effective from	Code history
FY2026	2025-10-01	Added
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

The official Tabular List has no additional instructions at this code level.

Review the instructions inherited from its parent categories below. Inherited instructions ↓

Review the official coding guidelines ↗

Inherited instructions

G31 · Other degenerative diseases of nervous system, not elsewhere classified

Excludes 2

Reye's syndrome (G93.7)

Use additional code

code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
mild neurocognitive disorder due to known physiological condition (F06.7-)

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official index references (1)

Apraxia(classic) (ideational) (ideokinetic) (ideomotor) (motor) (verbal) (1)

Apraxia(classic) (ideational) (ideokinetic) (ideomotor) (motor) (verbal) › primary progressive, of speechDisease index

Official conversion history

Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.

Release dates 2025-10-01

Previous assignment: R48.2

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
G31.80	Leukodystrophy, unspecified	Billable / specific
G31.81	Alpers disease	Billable / specific
G31.82	Leigh's disease	Billable / specific
G31.83	Neurocognitive disorder with Lewy bodies	Billable / specific
G31.84	Mild cognitive impairment of uncertain or unknown etiology	Billable / specific
G31.85	Corticobasal degeneration	Billable / specific
G31.86	Alexander disease	Billable / specific
G31.89	Other specified degenerative diseases of nervous system	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗

G31.87UpcomingBillable / specific

Primary progressive apraxia of speech

G31 · Inherited instructions

Use additional code

code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
mild neurocognitive disorder due to known physiological condition (F06.7-)

Excludes 2 · 9

G31 · Other degenerative diseases of nervous system, not elsewhere classified

Excludes 2

Reye's syndrome (G93.7)

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Claims & coverage

Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Official coding guidelines → · CMS ↗

Check Medicare coverage ↗

First observed · 2025-10-01

Code history

Latest recorded change · FY2026

ChangedUnchanged

FY2026

Effective from 2025-10-01

Added

Primary progressive apraxia of speech

Billable diagnosis code

CDC/NCHS · FY2026

All editions (3)

All editions	Effective from	Code history
FY2026	2025-10-01	Added
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

The official Tabular List has no additional instructions at this code level.

Review the instructions inherited from its parent categories below. Inherited instructions ↓

Review the official coding guidelines ↗

Inherited instructions

G31 · Other degenerative diseases of nervous system, not elsewhere classified

Excludes 2

Reye's syndrome (G93.7)

Use additional code

code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
mild neurocognitive disorder due to known physiological condition (F06.7-)

Chapters 6 · Diseases of the nervous system (G00-G99)

Excludes 2

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official index references (1)

Apraxia(classic) (ideational) (ideokinetic) (ideomotor) (motor) (verbal) (1)

Apraxia(classic) (ideational) (ideokinetic) (ideomotor) (motor) (verbal) › primary progressive, of speechDisease index

Official conversion history

Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.

Release dates 2025-10-01

Previous assignment: R48.2

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
G31.80	Leukodystrophy, unspecified	Billable / specific
G31.81	Alpers disease	Billable / specific
G31.82	Leigh's disease	Billable / specific
G31.83	Neurocognitive disorder with Lewy bodies	Billable / specific
G31.84	Mild cognitive impairment of uncertain or unknown etiology	Billable / specific
G31.85	Corticobasal degeneration	Billable / specific
G31.86	Alexander disease	Billable / specific
G31.89	Other specified degenerative diseases of nervous system	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗