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Pilonidal Cyst ICD 10 Code

A pilonidal cyst is a common skin condition that occurs close to the tailbone, typically at the top of the cleft of the buttocks. It forms when hair and debris become trapped under the skin, leading to infection, swelling, and the formation of a painful cyst or abscess. If left untreated or recurrent, it can develop into a sinus tract, creating ongoing drainage and complications. Pilonidal cysts predominantly affect young adults and can significantly impact a person’s quality of life due to pain, discomfort, and the potential for infection. 

What is a pilonidal cyst and sinus? 

A pilonidal cyst is a fluid-filled sac that typically forms near the base of the spine in the cleft between the buttocks. It develops when loose hairs penetrate the skin, causing an inflammatory reaction that leads to infection. As the cyst becomes infected, it can form an abscess that may rupture and drain pus. 

When a pilonidal cyst becomes chronic or recurrent, it can lead to the formation of a pilonidal sinus, a tract or tunnel under the skin that connects the infected cyst to the surface. The sinus often results in continuous drainage and may require surgical intervention for complete resolution. 

ICD-10 codes for pilonidal cyst and sinus 

The ICD-10 coding system provides a range of codes for pilonidal cysts, depending on the presence of complications such as abscess or sinus formation. These codes are essential for proper documentation, treatment planning, and reimbursement purposes. 

L05.01 – Pilonidal cyst with abscess 

Definition: This code is used for cases where the pilonidal cyst has become infected and formed an abscess, characterized by swelling, pain, and pus-filled drainage. An abscess occurs when the cyst becomes blocked, leading to a buildup of bacteria and pus. 

Nursing application: Nursing care for patients with a pilonidal cyst and abscess primarily focuses on managing pain, preventing infection, and ensuring proper wound care. Nurses should assess the area for signs of infection, such as redness, warmth, and purulent drainage. Wound care may involve cleaning the affected area, draining the abscess, and applying appropriate dressings. Education on maintaining hygiene and avoiding activities that could worsen the condition, such as prolonged sitting, is also important. 

L05.91 – Pilonidal cyst without abscess 

Definition: This code applies to cases where the pilonidal cyst is present but has not developed into an abscess. The patient may experience discomfort or swelling at the site, but there are no signs of infection. 

Nursing application: For a non-infected pilonidal cyst, nursing care focuses on preventive measures to avoid infection and manage discomfort. Nurses should educate patients on good hygiene practices, including keeping the area clean and dry, as well as trimming or removing excess hair in the affected region. Nurses can also advise patients to avoid prolonged sitting and friction in the area, which can worsen symptoms. If the cyst becomes painful, warm compresses or over-the-counter pain relief may be recommended. 

L05.02 – Pilonidal sinus with abscess 

Definition: This code is used for cases where the pilonidal cyst has developed into a sinus tract with an associated abscess. A pilonidal sinus is a chronic condition where an opening in the skin leads to a recurring cycle of infection and drainage. 

Nursing application: Nursing interventions for patients with a pilonidal sinus and abscess involve more extensive wound care and monitoring for signs of recurrent infection. Wound irrigation, packing, and frequent dressing changes may be necessary to ensure that the area heals properly. Nurses should monitor for complications such as cellulitis or systemic infection (sepsis) and provide education on post-operative care if the patient undergoes surgical intervention to remove the sinus. Pain management and patient education about preventing recurrence are key aspects of care. 

L05.92 – Pilonidal sinus without abscess 

Definition: This code refers to cases of a pilonidal sinus that have not developed an abscess. The sinus may drain fluid intermittently but without the signs of acute infection. 

Nursing application: For patients with a pilonidal sinus without abscess, nursing care centers on managing drainage and preventing further complications. Regular monitoring of the sinus tract for signs of infection and providing patient education on maintaining proper hygiene and preventing hair from re-entering the wound are essential. Nurses may also assist with referrals for surgical consultation if the sinus is recurrent or fails to heal with conservative treatment. 

 

Nursing interventions for pilonidal cyst and sinus 

Nursing care for pilonidal cysts and sinuses involves several key interventions aimed at managing symptoms, preventing infection, and promoting healing. Below are essential nursing strategies for managing this condition: 

1. Wound care and abscess management 

For patients with an infected pilonidal cyst or abscess, proper wound care is critical to prevent complications and promote healing. 

Application: Nurses should clean the affected area with an antiseptic solution and drain any abscesses as necessary. In some cases, incision and drainage (I&D) may be required, and nurses must be proficient in dressing the wound and educating the patient on how to perform wound care at home. Dressings should be changed regularly to keep the wound clean and free of debris. Additionally, nurses should monitor for signs of worsening infection, such as fever or spreading redness, and report these findings to the healthcare provider. 

2. Pain management 

Pain is a common symptom for patients with pilonidal cysts, especially if the cyst is infected or has developed into an abscess. 

Application: Nurses should assess the patient's pain levels regularly and administer pain relief medications as prescribed. Over-the-counter analgesics like acetaminophen or NSAIDs may be recommended for mild pain, while stronger medications such as opioids might be needed for severe cases. Nurses should also educate patients on non-pharmacological methods for managing discomfort, such as applying warm compresses to the affected area to reduce pain and inflammation. 

3. Hygiene and preventive education 

Maintaining good hygiene is a crucial preventive strategy for patients with pilonidal cysts or sinuses. Poor hygiene can lead to recurrent infections and abscess formation. 

Application: Nurses should educate patients on keeping the area clean and dry to prevent hair and debris from entering the cyst. For patients who are prone to recurrent cysts, hair removal strategies (such as shaving, laser hair removal, or depilatory creams) may be recommended to reduce the risk of cyst formation. Wearing loose clothing and avoiding prolonged periods of sitting can also help prevent irritation and reduce pressure on the area. 

4. Monitoring for complications 

Pilonidal cysts and sinuses can lead to serious complications, such as cellulitis, sepsis, or recurrent abscess formation, particularly if the condition is left untreated. 

Application: Nurses must monitor patients for signs of complications, including fever, worsening redness or swelling, and increased drainage. In patients with systemic symptoms, such as fever, chills, or malaise, nurses should assess for possible sepsis and notify the healthcare provider immediately. Additionally, any signs of cellulitis or spreading infection around the cyst should be addressed with prompt treatment, often involving antibiotics. 

5. Post-surgical care and education 

Many patients with chronic or recurrent pilonidal cysts or sinuses may require surgery to remove the cyst or sinus tract. Nurses help with post-operative care and ensure proper healing and prevent recurrence. 

Application: Post-surgical care involves monitoring the surgical site for signs of infection, educating the patient on proper wound care, and ensuring that the patient follows the recommended activity restrictions. Nurses should encourage patients to avoid activities that may disrupt the wound, such as heavy lifting or prolonged sitting, until healing is complete. Additionally, patient education on preventing future cysts, including lifestyle modifications and hair removal strategies, is essential. 

 

Preventing recurrence of pilonidal cysts: The nurse’s role 

Since pilonidal cysts are prone to recurrence, nurses should focus on preventive care and patient education to reduce the likelihood of future cysts or sinus formation. 

Key preventive strategies include: 

  1. Maintaining cleanliness: Keeping the affected area clean and free of hair is critical for preventing pilonidal cysts. Nurses should provide detailed instructions on hygiene practices and recommend regular hair removal if necessary.
  2. Encouraging weight management: Excess body weight, especially in the lower back and buttocks, can increase the risk of pilonidal cysts. Nurses can provide education on strategies for healthy weight management to reduce the risk of recurrence.
  3. Advising on clothing and lifestyle: Nurses should recommend that patients wear loose-fitting clothing and avoid activities that place prolonged pressure on the lower back, such as extended periods of sitting. Proper ergonomics and frequent breaks during sedentary activities can also reduce the risk of irritation.
  4. Promoting early intervention: Educating patients on recognizing early symptoms of pilonidal cysts (such as discomfort, swelling, or redness) and seeking prompt treatment can prevent the development of more serious complications, such as abscesses or sinuses. 

Looking to Learn More About Pilonidal Cysts?

Our online clinical guide dives deeper into the diagnosis, symptoms, and treatment of pilonidal cysts. 

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