ICD-10 Code A69.29 – Other conditions associated with Lyme disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A69.29 – Other conditions associated with Lyme disease
What it is
A69.29 identifies conditions linked to Lyme disease that are not classified elsewhere. Use it when documentation shows a Lyme-related disorder, but the record does not fit a more specific Lyme code.
Clinical signs
Clinical features vary; refer to documentation. Lyme-associated findings may include neurologic, cardiac, joint, or skin manifestations, but you should code only what the clinician clearly documents.
When to use this code
Use this code when the provider documents a condition associated with Lyme disease and no more specific ICD-10-CM option applies. It is appropriate for residual or atypical Lyme-related conditions when the chart supports a causal link. If the presentation is better described by another diagnosis, code that condition instead.
Do not use for
Do not use A69.29 for routine Lyme disease without a linked condition, or when a more specific Lyme code is documented. Do not assume association; check documentation.
Coding tip
Confirm that the record explicitly ties the condition to Lyme disease before assigning A69.29.