Tenonitis of bilateral orbits

This code signifies inflammation of Tenon's capsule, a fibrous sheath that envelops the eyeball, affecting both the left and right orbits. This condition can lead to pain, proptosis (bulging of the eye), and restricted eye movement due to swelling and fluid accumulation within the capsule.

Apply this code when documentation explicitly states bilateral tenonitis, an inflammatory condition of Tenon's capsule. This diagnosis is typically made based on clinical examination findings and confirmed by imaging studies such as orbital CT or MRI showing inflammation around both globes.

• Ensure documentation specifies "bilateral" involvement; otherwise, use the appropriate unilateral code.
• Differentiate from orbital cellulitis (H05.01-) or other orbital inflammatory diseases (H05.8-) which involve different anatomical structures or broader inflammation.
• Look for supporting documentation of inflammation, such as swelling, pain, or imaging findings consistent with tenonitis.