Billable / Specific Code
ICD-10-CM F98.21 is the diagnosis code for Rumination disorder of infancy and childhood. This code falls under the section "Behavioral and emotional disorders with onset usually occurring in childhood and adolescence" within Chapter 5 — Mental, Behavioral and Neurodevelopmental disorders (F01-F99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as F98.21. They are mutually exclusive:
Understanding where F98.21 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, F98.21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
F98.21 is the ICD-10-CM diagnosis code for "Rumination disorder of infancy and childhood". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of F98.21 is F98.2 ("Other feeding disorders of infancy and childhood"). F98.21 provides a more specific classification within this category.
F98.21 is located in Section F90-F98 — "Behavioral and emotional disorders with onset usually occurring in childhood and adolescence" within Chapter 5 of the ICD-10-CM Tabular List.
Use F98.21 when the patients documented diagnosis matches "Rumination disorder of infancy and childhood" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Rumination disorder of infancy and childhood is F98.21.
Yes, F98.21 can be used as a primary diagnosis code since it is billable and specific.
F98.21 is in Chapter 5 of the ICD-10-CM Tabular List.
Type 1 Excludes for F98.21 include: rumination disorder in adults (F50.84).
Yes, F98.21 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.